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Category — Web Security
Next.js Patches Critical AVIF and Windows Flaws Enabling Unauthenticated RCE

Next.js Patches Critical AVIF and Windows Flaws Enabling Unauthenticated RCE

Ağu 27, 2026 Vulnerability / Web Security
Credit: Hacktron Vercel has released security patches for two critical-severity vulnerabilities in the Next.js web framework, both of which allow unauthenticated remote code execution, one exploitable via specially crafted AVIF image files and the other through a path traversal flaw affecting servers that use a Windows filesystem. The Windows path traversal, tracked as  CVE-2026-75604  (CVSS score: 9.0), affects Next.js applications that use both the Pages Router and App Router without Cache Components when the server uses a Windows filesystem. Linux and macOS deployments are not affected. "There is no known workaround for affected windows-hosted applications. You should upgrade immediately if your server is hosted on Windows,"  Vercel said in its advisory . The fixes are available in Next.js 15.5.24 (Maintenance LTS) and 16.3.3 (Active LTS), published on August 25, 2026. Affected users can upgrade by running npm install next@15.5.24 for the 15.5 l...
CISA Adds Six Exploited Flaws to KEV, Including NetScaler, Linux, and SQL Server Bugs

CISA Adds Six Exploited Flaws to KEV, Including NetScaler, Linux, and SQL Server Bugs

Ağu 27, 2026 Vulnerability / Web Security
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added six flaws to its Known Exploited Vulnerabilities ( KEV ) catalog, including a high-severity security vulnerability impacting Citrix NetScaler ADC and NetScaler Gateway, citing evidence of active exploitation. The vulnerabilities are listed below - CVE-2019-1068 - A remote code execution vulnerability in  Microsoft SQL Server that could allow an attacker to execute code in the context of the SQL Server Database Engine service account. CVE-2026-8452 - An improper restriction of operations within the bounds of a memory buffer vulnerability in Citrix NetScaler ADC and NetScaler Gateway that could lead to denial-of-service. CVE-2022-0995 - An out-of-bounds memory write vulnerability in  Linux Kernel that could allow a local user to gain privileged access or cause a denial of service on the system. CVE-2015-5287 - A privilege escalation vulnerability in  Red Hat Automatic B...
Unpatched Kaltura mwEmbed Flaws Could Let Remote Attackers Read Files and Run Code

Unpatched Kaltura mwEmbed Flaws Could Let Remote Attackers Read Files and Run Code

Ağu 26, 2026 Vulnerability / Web Security
The CERT Coordination Center (CERT/CC) has disclosed two unpatched vulnerabilities in Kaltura's HTML5 video player library that allow a remote, unauthenticated attacker to read arbitrary files from a server and execute code on it. The flaws, tracked as CVE-2026-19913 and CVE-2026-19912 , both stem from the same unsafe deserialization in the mwEmbedLoader.php endpoint of the mwEmbed player library, which Kaltura also distributes as html5lib. Neither requires authentication or a Kaltura session token, and network access to the endpoint is the only precondition CERT/CC states. No patch is available, and CERT/CC said it was "unable to reach Kaltura to coordinate these vulnerabilities." Administrators are advised to restrict or disable external access to the endpoint and to enforce a strict allow-list for the ServiceUrl parameter that permits only legitimate backend API URLs. No exploitation had been reported at the time of writing, and neither CVE appeared in CISA...
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Attackers Map Your Network Quietly. Controls Block 1 in 10 of Those Actions

websitePicus SecurityExposure Management
Picus Labs analyzed 338 million attack simulations. See what got through in the Blue Report 2026.
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How IT Can Reduce Credential Risk Across Every Department

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Learn how to manage credential access for every user, from your finance team to third-party contractors.
Claude Opus 4.6 Bypasses Gym Booking Limit, Cancels Other Users' Reservations in Tests

Claude Opus 4.6 Bypasses Gym Booking Limit, Cancels Other Users' Reservations in Tests

Ağu 26, 2026 AI Security / Application Security
Aikido Security has published research that recreates the Australian gym-booking incident in a synthetic environment, finding that Claude Opus 4.6, running on the OpenClaw agent harness, exploited a client-side-only booking restriction in 9 of 10 runs. The original incident was first reported by ABC News on August 10, based on chat logs and screenshots the user supplied. He had asked an OpenClaw agent running Opus 4.6 to book him into a gym class. The agent booked sessions months beyond the window the site allowed. It then tested, without being asked, whether the same API would let it cancel another member's waitlist entry. The test removed the person holding the top place and moved the user up one position. The agent told him it could not add the member back. Aikido's test system is a single-page web application backed by a GraphQL API carrying the two flaws described in the original incident. The seven-day booking window is enforced only in the frontend, and the cancel...
A Malicious Webpage Could Poison Your Local AI Model Behind NVIDIA NemoClaw

A Malicious Webpage Could Poison Your Local AI Model Behind NVIDIA NemoClaw

Ağu 25, 2026 AI Security / Vulnerability
Oasis Security has disclosed a weakness in NVIDIA NemoClaw that could let an attacker-controlled webpage take unauthenticated control of the local Ollama instance serving an AI agent and plant hidden instructions inside the model itself. The findings were shared with The Hacker News ahead of publication, and the report says Oasis Security reported them to NVIDIA's Product Security Incident Response Team (PSIRT) beforehand. The research carries no CVE identifier. No exploitation has been reported as of August 25, 2026. Oasis Security's head of research, Elad Luz, told The Hacker News that NemoClaw v0.0.35 fixed the issue on macOS and Linux. There is no fix on the Windows and WSL path, according to Luz, where v0.0.34 added a Windows installation that carries a warning instead. NemoClaw is NVIDIA's open source reference stack for running agents such as OpenClaw inside its OpenShell sandboxes, and Ollama is one of its supported local inference backends. The report des...
24 npm Packages Abuse unpkg Mirrors to Host Fake Cloudflare CAPTCHA Pages

24 npm Packages Abuse unpkg Mirrors to Host Fake Cloudflare CAPTCHA Pages

Ağu 25, 2026 Phishing / Threat Intelligence
Cybersecurity researchers have disclosed details of a new campaign that uses a cluster of 24 npm packages as free phishing infrastructure for redirecting to ClickFix-style fake CAPTCHA pages. "While the malware is simply a single HTML page inside the npm package, and while downloading it wouldn't do harm, the threat actor’s use of npm isn't to infect developers who install it, but to use the registry and its mirrors as a safe, validated storage for the malware," OX Security researchers Moshe Siman Tov Bustan and Vitalii Chepurko said . The list of npm packages, some of which are still available for download, is below - bgzxcuite2 prezdentkxheiw egair0810 mnteckets airdzticket egypt0811 passport811 vxhjkseuiaqkb ndmushdkeqe ndmxchdjxn2 ndmfguyhoxc3 mjsdqwocvn m2fcsfyjkuxb m3fdfocdoewn @worrisome/reutil testdgdbcsd tesgfvbncsdbcv mndsxcusiwlk1 mn2adskhweox mn3sadkoiewu mn4xcouzvhus mbxcnsuwgs1 s...
Attackers Target miniOrange SAML Flaws That Can Grant WordPress Admin Access

Attackers Target miniOrange SAML Flaws That Can Grant WordPress Admin Access

Ağu 25, 2026 Vulnerability / Web Security
Bad actors are attempting to exploit two severe unauthenticated authentication bypasses in the Xecurify miniOrange SAML 2.0 Single Sign On plugin that make it possible for an attacker to sign in as any WordPress user, including administrators. The vulnerabilities, as disclosed by Patchstack , are listed below - CVE-2026-61979 (CVSS score: 8.1) - An unauthenticated privilege escalation vulnerability stemming from signature algorithm confusion (Fixed in version 17.0.5 for the Standard edition) CVE-2026-15981 (CVSS score: 9.8) - An authentication bypass vulnerability stemming from accepting malformed signatures as valid (Fixed in version 17.0.6 for the Standard edition) "This is due to the mo_saml_validate_signature() function performing a loose boolean check on the raw tri-state integer returned by PHP's openssl_verify(), causing an error return value of -1 to be evaluated as truthy and therefore treated as a successful signature verification," according to a...
Actively Exploited Oracle WebLogic Flaw Lets Unauthenticated Attackers Access Critical Data

Actively Exploited Oracle WebLogic Flaw Lets Unauthenticated Attackers Access Critical Data

Ağu 25, 2026 Vulnerability / Enterprise Security
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added a maximum-severity security flaw impacting Oracle HTTP Server and Oracle WebLogic Server to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerability, tracked as CVE-2026-21962 (CVSS score: 10.0), allows an unauthenticated attacker with network access via HTTP to compromise Oracle HTTP Server and Oracle WebLogic Server Proxy Plug-in. Successful exploitation of the flaw can lead to unauthorized access to the instances or modification of critical data. "Oracle HTTP Server and Oracle WebLogic Server Proxy Plug-in contain an improper access control vulnerability that can result in unauthorized creation, deletion, or modification access to critical data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server and Oracle WebLogic Server Proxy Plug-in accessible data," CISA said . While patches for the flaw w...
Weedhack Malware Spreads via Fake Minecraft Clients and SEO Poisoning

Weedhack Malware Spreads via Fake Minecraft Clients and SEO Poisoning

Ağu 24, 2026 Malware / SEO Poisoning
Cybersecurity researchers have found that several websites are still actively distributing a malware family known as Weedhack to gamers by masquerading as Minecraft clients. McAfee Labs said it detected and blocked more than 6,300 attempts to access malicious sites, adding that it found lookalike gaming websites designed to mimic legitimate projects, including branding, feature lists, FAQs, installation guides, developer credits, and links to genuine GitHub repositories. Notably, one of the sites has been built using Lovable , an artificial intelligence (AI)-powered website builder, highlighting how readily available tools can further lower the barrier and make it easier to launch convincing new malicious sites. Weedhack was first documented by the cybersecurity company back in June 2026, detailing its use of SEO poisoning and YouTube to redirect traffic to the bogus domains. The attack triggers a multi-stage sequence that culminates in the deployment of JAR payloads that can ...
WordlistLoader Delivers Amatera via ClickFix, SynkLoader Phishes Windows Passwords

WordlistLoader Delivers Amatera via ClickFix, SynkLoader Phishes Windows Passwords

Ağu 24, 2026 Malware / Endpoint Security
Cybersecurity researchers have flagged two new malware families called WordlistLoader and SynkLoader that's used to deliver next-stage payloads and likely sell access to ransomware groups. According to findings from Gen Digital, WordlistLoader is being used to deliver Amatera Stealer (aka ACR Stealer or AcridRain Stealer) via ClearFake campaigns, which employ the ClickFix (aka FakeCaptcha) technique to dupe victims into running malicious commands under the pretext of completing CAPTCHA verification checks. "Once the visitor clicks on the 'I'm not a robot' checkbox, they're walked through the well-known ClickFix flow, where a malicious command is copied into their clipboard and the victim is instructed to paste it into the Windows Run dialog and execute it, leading to the download of WordlistLoader that ultimately results in the execution of Amatera," security researcher Vojtěch Krejsa said . The ClickFix prompts are displayed on real websites th...
UAT-10147 Uses AI to Scale Server Attacks, Deploys SPECTRE With EDR Bypass and Linux Rootkit

UAT-10147 Uses AI to Scale Server Attacks, Deploys SPECTRE With EDR Bypass and Linux Rootkit

Ağu 24, 2026 Cybercrime / Malware
Cybersecurity researchers have disclosed details of a Chinese-speaking cybercrime group dubbed UAT-10147 that's targeting Windows and Linux web servers globally across the education, media, technology, and gaming sectors. The vast majority of the targets are located in Brazil, Bolivia, China, Canada, and Vietnam. Details of the threat activity came to light following the discovery of an open directory hosted at "139.180.197[.]150," which was observed communicating with one of the compromised machines. "The actor leveraged publicly disclosed vulnerabilities to gain initial access at scale," Cisco Talos said in a two-part report published last week. The actor employed a mixture of open-source offensive frameworks, including Metasploit , ysoserial , PentestGPT , DeepAudit, and multiple privilege escalation exploits to automate intrusion operations and establish persistence." UAT-10147 has been described as a threat actor that conducts search engine op...
GitLab CVE-2026-19478 Comes Under Active Exploitation Within Days of Disclosure

GitLab CVE-2026-19478 Comes Under Active Exploitation Within Days of Disclosure

Ağu 21, 2026 Vulnerability / Enterprise Security
A newly disclosed security flaw in GitLab has come under active exploitation within days of public disclosure, according to watchTowr. The vulnerability in question is CVE-2026-19478 (CVSS score: 9.4), a case of code injection that allows an unauthenticated attacker to modify or delete publicly accessible GitLab projects and rewrite their data under certain conditions without requiring credentials, user interaction, or obscure configuration. The following versions of GitLab Community Edition (CE) and Enterprise Edition (EE) are affected by the flaw - 18.2 before 18.11.11 19.0 before 19.0.8 19.1 before 19.1.6 19.2 before 19.2.4 In an alert released earlier this week, GitLab said the issue could be exploited via a GraphQL directive. Fixes for the flaw were rolled out in GitLab CE and EE versions 19.2.4, 19.1.6, 19.0.8, and 18.11.11. Preemptive exposure management firm watchTowr told The Hacker News that it was able to reproduce the vulnerability within minutes of ...
New Cryptographic Context Injection Attack Could Let Web Pages Steal Grok Chat Data

New Cryptographic Context Injection Attack Could Let Web Pages Steal Grok Chat Data

Ağu 20, 2026 Artificial Intelligence / Data Security
Adversa AI has disclosed an attack technique that it says can cause xAI's Grok chatbot to send a user's name, approximate location, subscription tier, and the prompts from the ongoing conversation to an attacker-controlled server after the user asks it to summarize an ordinary web page. The AI security company, which has codenamed the technique "Cryptographic Context Injection ," said the transfer completed without a confirmation step and with no visible warning in its proof-of-concept demonstration. There is no patch, no CVE identifier, and no user-facing workaround, and the writeup does not report any exploitation in the wild. Asked which build was tested, Adversa told The Hacker News the target was the Grok web chat at grok.com running Grok 4.5 Fast, and that the attack was reproduced once on August 19, 2026. The writeup gives no success rate. The company said it has attempted the attack 20 times since June with a 40% success rate, and that the failures cam...
CDN Tsunami Attack Abuses HTTP/3 Translation for Up to 350x DoS Amplification

CDN Tsunami Attack Abuses HTTP/3 Translation for Up to 350x DoS Amplification

Ağu 20, 2026 Web Security / Vulnerability
Cybersecurity researchers have disclosed two denial-of-service (DoS) attacks that exploit how major content delivery networks (CDNs) convert client-facing HTTP/3 traffic into HTTP/1.1 requests to the websites they front, amplifying a low-bandwidth request stream by up to 350x against the origin server. The attacks, collectively named " CDN Tsunami ," were evaluated against Alibaba, Baidu, Cloudflare, Amazon CloudFront, Fastly, and Tencent. All six were found susceptible to the bandwidth variant and five to the connection variant, with Cloudflare unaffected by the latter because it buffers the complete request before opening a connection to the origin. The attack requires a website hosted on one of the six providers, with HTTP/3 serving at the edge, and no configuration changes on the website's part. The paper lists HTTP/3 as enabled by default at Cloudflare and CloudFront. However,  Cloudflare's documentation  describes HTTP/3 as available on all plans and pr...
NASA AIT-GUI Flaws Could Let Unauthenticated Attackers Issue Spacecraft Commands

NASA AIT-GUI Flaws Could Let Unauthenticated Attackers Issue Spacecraft Commands

Ağu 20, 2026 Vulnerability / Critical Infrastructure
Security researchers at Cycode have disclosed a chain of flaws in AIT-GUI, the browser-based operator console for NASA/JPL's open-source AMMOS Instrument Toolkit, that allow an unauthenticated attacker to issue arbitrary commands to the software's spacecraft and instrument command bus. The chain, tracked as GHSA-p9r8-2q67-fp86 and rated 9.4 on the CVSS v3.1 scoring system, impacts AIT-GUI versions 2.5.1 and earlier, with the advisory listing version 2.5.2 as the fixed release. The advisory, published August 13, 2026, states that no CVE has been assigned to it. The AMMOS Instrument Toolkit is a framework for building ground data systems, the software that sends commands to instruments and spacecraft and processes the telemetry coming back down. AIT-GUI is its operator console, and the endpoints in question relay operator commands to a command bus. "The blast radius of an unauthenticated POST is measured in issued instrument commands, not defaced pages," Cycode ...
40 Malicious Firefox Extensions Pose as Web3 Products to Steal Wallet Secrets

40 Malicious Firefox Extensions Pose as Web3 Products to Steal Wallet Secrets

Ağu 20, 2026 Browser Security / Cryptocurrency
A set of 40 Mozilla Firefox extensions has been found to engage in cryptocurrency wallet theft by masquerading as OKX, Rabby Wallet, TronLink, and other Web3 products. According to the Socket Threat Research team, the extensions are part of a broader set of 77 browser add-ons that share source code and infrastructure overlaps. The campaign, dubbed Offside Wallet Theft Factory , is believed to have been active since March 2026. The activity has not been attributed to any known threat actor or group. "Extension-level analysis confirms 40 as malicious," security researcher Kirill Boychenko said . "Another 37 form a coordinated multi-sport score-shell operation. Their analyzed builds contain no confirmed credential- or wallet-stealing payloads, but their deceptive functionality, shared publishing artifacts, and version histories indicate malicious intent." Among those 40 extensions, seven use threat actor-controlled Supabase projects as remote switches to server ...
Elementor Pro Flaw Could Let Unauthenticated Attackers Upload PHP and Execute Code

Elementor Pro Flaw Could Let Unauthenticated Attackers Upload PHP and Execute Code

Ağu 20, 2026 Vulnerability / Web Security
Cybersecurity researchers have disclosed details of a critical flaw in the Elementor Pro WordPress plugin that, if successfully exploited, could lead to remote code execution. The vulnerability, tracked as CVE-2026-32475 , carries a CVSS score of 9.0 out of 10.0. It has been described as a case of unrestricted upload of a file with a dangerous type. "The flaw lives in the Forms module's File Upload field, where the extension check and the file-move step run in two separate loops with different handling of empty file entries," Patchstack said . "By submitting two file parts for the same field, an unauthenticated attacker skips the extension blocklist entirely and writes a PHP file into a public directory." This discrepancy in how it validates the file's extension and moves the uploaded file to a public directory when empty file entries are processed turns a restricted file-upload field into an unauthenticated remote code execution primitive. Succes...
Cloudflare Workers Spectre Attack Leaks JWT From Co-Located Worker at 12 Bits/Second

Cloudflare Workers Spectre Attack Leaks JWT From Co-Located Worker at 12 Bits/Second

Ağu 19, 2026 Cloud Security / Vulnerability
Cybersecurity researchers have disclosed details of a  remote Spectre attack  against Cloudflare Workers that leaked a JSON Web Token (JWT) from a co-located Worker in the production environment at up to 12 bits per second, 360 times the rate of an earlier attack demonstrated in 2021. The end-to-end experiment used an attacker Worker and a victim Worker controlled by the researchers, with the JWT intentionally placed in the victim's memory. The research paper stated that no customer data was accessed. Cloudflare said the attack has already been mitigated in production after it improved Dynamic Process Isolation (DyPrIs), integrated the  V8 Sandbox , and deployed Memory Protection Keys (MPK)-based in-process isolation, adding that it found no indicators of active exploitation over the last three years. "We demonstrate that the production implementation of DyPrIs was insufficient," the researchers said in  the paper . Cloudflare Workers runs code from multiple...
Microsoft Copilot Personal Flaws Could Let One Click Exfiltrate Data From Connected Apps

Microsoft Copilot Personal Flaws Could Let One Click Exfiltrate Data From Connected Apps

Ağu 18, 2026 AI Security / Vulnerability
Varonis Threat Labs has disclosed three vulnerabilities in Microsoft Copilot Personal that it said could allow a single click on a crafted link to silently pull data from connected apps and other information available to the victim's Copilot session. The flaws, which the researchers collectively named CoSnitch , turn in part on an undocumented URL parameter that the assistant itself surfaced during testing. The company said it reported the issue to Microsoft in December 2025 and that patches shipped on August 18, 2026. CoSnitch is tracked as  CVE-2026-24301  in Microsoft's Security Update Guide. The research names Copilot Personal, the consumer assistant hosted at copilot.microsoft.com, and does not state that the same behavior affected Microsoft 365 Copilot. The researchers said they found no evidence that CoSnitch was exploited in the wild. They reached the parameter by repeatedly asking Copilot why a prompt could not be made to run without user interaction, an ap...
Attackers Exploit MLflow SSRF Flaw to Steal Cloud Credentials and Secrets

Attackers Exploit MLflow SSRF Flaw to Steal Cloud Credentials and Secrets

Ağu 18, 2026 Vulnerability / Artificial Intelligence
Two critical vulnerabilities impacting MLflow, an open-source artificial intelligence (AI) platform, and FUXA, an open-source, web-based SCADA / HMI software built for operational technology (OT) and industrial automation, are witnessing malicious scanning and exploitation efforts. According to independent reports from watchTowr and VulnCheck, the vulnerabilities in question are as follows - CVE-2026-64849 (CVSS score: 9.3) - An unauthenticated Server-Side Request Forgery (SSRF) vulnerability in MLflow that can allow an attacker who can reach the Tracking Server (mlflow server) to issue HTTP requests to arbitrary internal cloud metadata endpoints and extract sensitive data. (Affects versions < 3.15.0) CVE-2026-25895 (CVSS score: 9.5) - A missing authentication for a critical function and path traversal vulnerability in FUXA that can allow an unauthenticated, remote attacker to write arbitrary files to the server file system and achieve remote code execution. (Affects ve...
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