Cyber Attack | Breaking Cybersecurity News | The Hacker News

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a security flaw in WordPress Core to the Known Exploited Vulnerabilities ( KEV ) catalog, citing evidence of active exploitation. The high-severity vulnerability, tracked as CVE-2026-119977 (CVSS score: 8.1), is a case of Time-of-check Time-of-use (TOCTOU) race condition that could be exploited to achieve arbitrary code execution on affected servers. Patches for the flaw were released late last month. "WordPress Core contains a time-of-check time-of-use (TOCTOU) race condition vulnerability that could allow unauthenticated attackers to execute code on the server during the upgrade window," CISA said. "This is due to predictable, web-accessible staging paths used during full-package core upgrades." Details of the flaw emerged last week when Wordfence said exploiting the vulnerability does not require an account on the site. That said, it does require an attacker to exploit a brief w...

Blockchain infrastructure provider Chainstack on Tuesday disclosed that it was targeted in a cyber attack that allowed an unauthorized party to gain access to some parts of its infrastructure. The incident is assessed to be part of a large-scale, artificial intelligence (AI)-powered attack campaign that came to light last week. "An external attacker gained unauthorized access to part of Chainstack's infrastructure through a third-party component," the company said . "We detected the intrusion, cut the access paths, and are hardening our systems." According to the timeline of events shared by Chainstack, the attacker gained access to a development environment on October 26, 2026, and then escalated their access to break into "some parts of our production environment." The intrusion was subsequently detected on October 31, 2026, and the attacker's access was cut off that same day, the company noted. As part of the digital break-in, the ...

Binance on Tuesday said the record-setting theft of $6.43 billion in assets from the world's largest cryptocurrency exchange was the culmination of a "sophisticated, multi-stage campaign" that involved the use of a tampered Homebrew installation and recruitment-themed social engineering attack targeting two of its engineers. "It was not a single isolated breach or a simple phishing incident," the company said . "The attackers combined a range of techniques, including social engineering by fake recruitment interviews, malicious software downloads, compromised internal AI tooling, endpoint compromise, and an advanced transaction-authorisation method." The starting point has been traced back to a supply chain attack targeting one of its engineers from the Wallet DevOps team (named "Engineer A"), who downloaded a trojanized Homebrew installer to install a popular artificial intelligence (AI) tool after searching for it on a search engine....

An attacker broke into the update system of the cPGuard security tool on November 2 and used it to send a malicious script to customers' Linux servers. The script installed a backdoor and collected password hashes and other sensitive files from servers that ran it, cPGuard maker OPSSHIELD said in an advisory . In a later disclosure , OPSSHIELD said about 2,950 customer servers ran the script, which sent the files it collected back to the attacker. OPSSHIELD first named cPGuard 5.88.25 as the fix. Its later disclosure says version 5.88.26 removes the backdoor, and a follow-up update removes a scheduled task the script also left. Admins should install the latest version and then check that those files are gone. Credentials the script copied may still work after the update, so any server that may have run the script also needs new passwords and keys. At 02:06 UTC, the attacker, who has not been identified, used compromised credentials to get into cPGuard's update system. ...

BTCPay Server, a self-hosted, open-source cryptocurrency payment processor, has urged users to install the latest version of its software in response to reports of Bitcoin and Litecoin being stolen from hot wallets on instances running older versions. "Our investigation found that these attacks targeted servers running BTCPay Server 2.4.1 (released on 23 July 2026) or earlier," BTCPay Server said . "The attackers used a different method to exploit the vulnerability fixed in 2.4.2, released on 7 August 2026." Users who are running versions 2.4.1 or earlier are recommended to move to a fresh server with a new wallet, even in scenarios where users have not noticed a theft. In the event of stolen funds or suspected unauthorized access, it's imperative that users consider the entire machine and all secrets stored on it as compromised and follow the same recovery procedures. It's currently unknown when the attackers behind the campaign first began exploi...

Synology is urging customers to update the DiskStation Manager (DSM) software powering its Network Attached Storage (NAS) devices following ransomware attacks. The Taiwanese vendor said it observed threat actors exploiting a vulnerability patched in December 2024 to target devices running outdated versions of DSM. "These attacks aim to encrypt data and extort ransom," it said in a statement released last week. While Synology did not disclose the exact security flaw that's being exploited in these attacks, the company linked to a November 2024 security advisory that listed three vulnerabilities - CVE-2024-10441 (CVSS score: 9.8) - An improper encoding or escaping of output vulnerability in the system plugin daemon of DSM that could lead to remote code execution via unspecified vectors. CVE-2024-50629 (CVSS score: 5.3) - An improper encoding or escaping of output vulnerability in the webapi component of DSM that could allow remote attackers to read limite...

A maximum-severity security flaw impacting Siemens SIMATIC IoT2050 Advanced devices has come under active exploitation, VulnCheck has revealed . The vulnerability, tracked as CVE-2026-58115 (CVSS score: 10.0), is a case of missing authentication for a critical function that could be exploited by an unauthenticated remote attacker to run arbitrary code. "SIMATIC IoT2050 Advanced devices running Industrial OS with Node-RED installed contain a missing authentication vulnerability in the Node-RED HTTP interface that could allow an unauthenticated remote attacker to create malicious flows and execute arbitrary code on the underlying server with maximum privileges," Siemens said in an advisory released back in August 2026. The issue has been remediated in versions 4.3.4.1 or later. As mitigations, Siemens recommends that users uninstall Node-RED or harden the installation by following the steps below - Enabling HTTPS access Securing the editor and admin API via cre...

Threat actors are attempting to exploit an unpatched maximum-severity security vulnerability in the CryptoPayment Gateway WordPress plugin, according to findings from Defused Cyber. The vulnerability in question is CVE-2026-81648, which carries a CVSS score of 10.0. Successful exploitation of the flaw could permit unauthenticated users to delete arbitrary files on the server and extract sensitive data, including stored wallet credentials. "The CryptoPayment Gateway WordPress plugin from 1.2.1 to 1.2.2 does not apply an authorization check on one of its AJAX endpoints, allowing unauthenticated users to invoke administrative operations, including deleting arbitrary files on the server, overwriting the payment gateway configuration and recovering stored wallet credentials in cleartext," according to a description of the flaw on the NIST National Vulnerability Database (NVD). The vulnerability affects versions 1.2.1 through 1.2.2, which is the latest version. There are n...

Cybersecurity researchers have disclosed details of a cyber espionage campaign targeting Israel and the Kurdistan Region of Iraq by an Iran state-aligned threat actor between August and October 2026. According to a report published by Dream Research Labs, the campaign has led to the compromise of a high-profile individual in Israel, along with additional compromises affecting a government cloud environment in the Kurdistan Region. The activity has been attributed to a threat actor known as DarkBlinders , an Iran-nexus group assessed to be active since at least September 2024 and linked to attacks aimed at aviation infrastructure and telecommunications in the U.A.E. and Iraq. It exhibits no technical overlap with other known hacking groups. Attacks mounted by the group are known to rely on spear-phishing as an initial access pathway to lure recipients into opening trojanized utilities or clicking on attacker-controlled websites that host similar tools as direct downloads. Prev...

Cybersecurity researchers have disclosed details of a cyber espionage campaign specifically targeting Linux infrastructure associated with government entities and state-affiliated infrastructure. The activity, observed by Palo Alto Networks Unit 42 between October 2025 and April 2026, has been tracked under the moniker CL-UNK-1211 , where "CL" refers to cluster and "UNK" stands for unknown motivation. A notable aspect of the campaign concerns the use of large language models (LLMs) and/or automated artificial intelligence (AI) agents to generate payloads and execute malicious code. "The attackers behind this cluster of activity focused on Linux environments to conduct extensive reconnaissance and maintain persistent network access to support intelligence-gathering," researchers Roey Porat and Tom Fakterman said . "The attackers attempted to dump sensitive databases and exfiltrate government mailboxes to access social media accounts." T...

Malicious code on the website of prediction market Polymarket sold some signed-in traders' positions and moved their funds to the hackers on October 29. The code had replaced a page-speed script that the site loaded from an outside company. Polymarket says  it is refunding about $2.7 million to 726 affected wallets.  Blockchain records  show crypto worth about $2.64 million reached the hackers' wallet in under an hour. The replaced script came from DebugBear, whose real user monitoring (RUM) tool measures how fast web pages load for real visitors. Researchers at Hudson Rock  downloaded the malicious file on October 29 from the address Polymarket's site used to load the DebugBear script. They also found a change in Polymarket's site code that removed the DebugBear script. DebugBear's DNS records were compromised through its domain registrar, the company said on X. Its early findings indicate the attack targeted one customer's website. It has seen no sign...

American blockchain analysis firm Chainalysis said it was the target of a cybersecurity incident in which an external actor accessed non-sensitive customer data. However, the company noted that the breach did not result in unauthorized access to its investigation content, authentication credentials, or session tokens. "This month, Chainalysis detected an external actor using offensive agentic techniques to gain unauthorized access to Chainalysis systems and internal tools," Chainalysis said Friday. "Some non-sensitive customer data, such as user IDs, full names, email addresses, and organization role labels for users provisioned on our platform were accessed, including such information relating to your organization and users." The company said it's patching vulnerabilities and hardening its systems in response to the incident. The mention of "offensive agentic techniques" indicates that an artificial intelligence (AI)-powered tool was used ...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added two security flaws impacting Ivanti Connect Secure (ICS) to its Known Exploited Vulnerabilities ( KEV ) catalog, following active exploitation in the wild. The vulnerabilities are listed below - CVE-2026-111357 (CVSS score: 8.8) - A missing authentication for a critical function vulnerability that could allow a local authenticated attacker to escalate their privileges. CVE-2026-118527 (CVSS score: 4.3) - A generation of predictable numbers or identifiers vulnerability that could allow a remote authenticated attacker to upload files with attacker-controlled content to a known location on disk. It's worth noting that the security bugs are part of an exploit chain that was first documented by Volexity earlier this month as weaponized in conjunction with an authentication bypass flaw (CVE-2026-104935, CVSS score: 8.6) by a previously undocumented threat actor dubbed UTA0576. CVE-2026-10493...

Threat actors are launching about 8,226 network-layer distributed denial-of-service (DDoS) attacks per hour, Cloudflare revealed Thursday. The web infrastructure and security company said it autonomously mitigated 18.2 million network-layer (L3) DDoS attacks and 14.4 trillion HTTP DDoS requests in the third quarter of 2026. That amounts to 197,400 attacks per day, or one attack every 0.44 seconds. In comparison, a total of 13.2 million and 10.0 million L3 DDoS attacks were recorded in Q2 and Q1 2026, respectively. The increase has been linked to DDoS-for-hire booter or stresser services that are responsible for hundreds of thousands of attacks.  "Short-burst, low-bandwidth attacks lasting under 10 minutes and 1 Gbps surged by 208%," the Cloudforce One threat intelligence team said in its quarterly DDoS Threat Report shared with The Hacker News. An interesting trend is the decline of hyper-volumetric attacks exceeding 1 Tbps by 69% from the previous quarter – going ...

Threat actors have been observed attempting to exploit a high-severity security flaw in WordPress Core shortly after patches were released. The vulnerability , which does not have a CVE identifier, relates to a case of remote code execution impacting WordPress Core versions 4.7 through 7.1.3. It carries a CVSS score of 8.1 on the CVSS scoring system. Patches for the flaw were released on October 28, 2026. "This is due to predictable, web-accessible staging paths used during full-package core upgrades," Wordfence said . "This makes it possible for unauthenticated attackers to execute code on the server during the upgrade window." The WordPress security company noted that successful exploitation requires an "attacker to hit a very narrow window while WordPress is unpacking a complete Core update." The issue boils down to the fact that affected versions unpack new files part of a full-package Core update into a predictable directory under "wp-c...

Cybersecurity researchers have disclosed that a trojanized version of Anthropic's official Claude Code extension was distributed through the Cursor Marketplace as a legitimate update, attempting to install a persistent SSH backdoor on affected systems. The malicious update, version 2.1.313, was distributed under the extension's legitimate publisher identity, prompting Cursor to temporarily shut down its marketplace to remove the compromised package. The exact method attackers used to introduce the unauthorized update remains unclear. "We identified a security incident affecting a modified Claude Code VS Code extension accessed through our Cursor IDE extension marketplace, impacting at most 5,000 users," Cursor said . "This malicious version of the extension was not developed by Anthropic. It does not impact other extensions downloaded from the cursor[.]com/marketplace, Grok Bot, Grok, or our other SpaceXSI product. However, Cursor's statement that the...

Drupal has warned that threat actors are exploiting a "highly critical" security flaw in its Commerce Core component. The vulnerability, tracked as CVE-2026-118539 (CVSS score: N/A), is a case of missing authorization affecting Commerce Core versions from 0.0.0 to 2.41 and from 3.0.0 to 3.3.13. "This module enables you to sell goods and services to customers through an included shopping cart and checkout form or through decoupled applications via APIs," Drupal said in an advisory. "The module doesn't sufficiently protect certain routes and entity fields, leading to an access bypass that may financially impact the vendor." The open-source content-management framework acknowledged that the vulnerability is being "actively exploited in the wild," but provided no specifics about the nature of the activity or the extent of the campaign. Users are being recommended to update to the latest version - Version 3.x - Upgrade to Commerc...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added two security flaws impacting Cisco and GitLab software to its Known Exploited Vulnerabilities ( KEV ), citing evidence of active exploitation. The vulnerabilities are listed below - CVE-2026-97229 (CVSS score: 10.0) - An integer overflow or wraparound vulnerability in GitLab Community Edition and Enterprise Edition that could allow an unauthenticated user to execute arbitrary code on the GitLab server via a specially crafted regular expression in a CI/CD configuration due to insufficient regular expression validation. CVE-2026-76418 (CVSS score: 8.6) - An unchecked return value to NULL pointer dereference vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software that could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial-of-service (DoS) condition. The devel...

Cryptocurrency giant Binance said on Thursday that a "security incident" on its platform has impacted about $6.3 billion worth of assets. The world's biggest cryptocurrency exchange said nearly $3 billion of those assets have been frozen on-chain so far.  Tether and Circle said they have frozen more than 1.567 billion USDT and 800 million USDC related to the incident, respectively. The Arbitrum Security Council is said to have executed a transaction to freeze about $30.5 million from the Binance Exploit.  "Initial investigation suggests that the security incident may involve a compromised DevOps engineer's laptop, which allowed an attacker to gain access to a service container and submit unauthorized withdrawal transactions," Binance said in an update. The company said there is no evidence of a wallet private key leak, adding it will cover all losses from the Secure Asset Fund for Users ( SAFU ) fund and its own funds. Out of an abundance of c...

Cisco has released patches to address a high-severity security flaw in Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software that it said has been exploited in the wild. The vulnerability, tracked as CVE-2026-76418 , is rated 8.6 on the CVSS scoring system. Successful exploitation could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial-of-service (DoS) condition. According to Cisco, the issue is rooted in the Remote Access SSL VPN service of ASA and FTD software. "This vulnerability is due to logic errors when secondary authentication is configured on a tunnel group," it said in a Wednesday advisory. "An attacker could exploit this vulnerability by sending a crafted request when connecting to the SSL remote access VPN. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition." The network ...