Search results for node.js and react | Breaking Cybersecurity News | The Hacker News

Node.js has released updates to fix what it described as a critical security issue impacting "virtually every production Node.js app" that, if successfully exploited, could trigger a denial-of-service (DoS) condition. "Node.js/V8 makes a best-effort attempt to recover from stack space exhaustion with a catchable error, which frameworks have come to rely on for service availability," Node.js's Matteo Collina and Joyee Cheung said in a Tuesday bulletin. "A bug that only reproduces when async_hooks are used would break this attempt, causing Node.js to exit with 7 directly without throwing a catchable error when recursions in user code exhaust the stack space. This makes applications whose recursion depth is controlled by unsanitized input vulnerable to denial-of-service attacks." At its core, the shortcoming stems from the fact that Node.js exits with code 7 (denoting an Internal Exception Handler Run-Time Failure ) instead of gracefully handling the...

A maximum-severity security flaw has been disclosed in React Server Components (RSC) that, if successfully exploited, could result in remote code execution. The vulnerability, tracked as CVE-2025-55182, carries a CVSS score of 10.0. The vulnerability has been codenamed React2shell . It allows "unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints," the React Team said in an alert issued today. "Even if your app does not implement any React Server Function endpoints, it may still be vulnerable if your app supports React Server Components." According to cloud security firm Wiz , the issue is a case of logical deserialization that stems from processing RSC payloads in an unsafe manner. As a result, an unauthenticated attacker could craft a malicious HTTP request to any Server Function endpoint that, when deserialized by React, achieves execution of arbitrary JavaScript code on the server. ...

As many as 60 malicious npm packages have been discovered in the package registry with malicious functionality to harvest hostnames, IP addresses, DNS servers, and user directories to a Discord-controlled endpoint. The packages, published under three different accounts, come with an install‑time script that's triggered during npm install, Socket security researcher Kirill Boychenko said in a report published last week. The libraries have been collectively downloaded over 3,000 times. "The script targets Windows, macOS, or Linux systems, and includes basic sandbox‑evasion checks, making every infected workstation or continuous‑integration node a potential source of valuable reconnaissance," the software supply chain security firm said . The names of the three accounts, each of which published 20 packages within an 11-day time period, are listed below. The accounts no longer exist on npm - bbbb335656 cdsfdfafd1232436437, and  sdsds656565 The malicious code, per So...

The North Korean threat actor known as the Lazarus Group has been observed leveraging a "web-based administrative platform" to oversee its command-and-control (C2) infrastructure, giving the adversary the ability to centrally supervise all aspects of their campaigns. "Each C2 server hosted a web-based administrative platform, built with a React application and a Node.js API," SecurityScorecard's STRIKE team said in a new report shared with The Hacker News. "This administrative layer was consistent across all the C2 servers analyzed, even as the attackers varied their payloads and obfuscation techniques to evade detection." The hidden framework has been described as a comprehensive system and a hub that allows attackers to organize and manage exfiltrated data, maintain oversight of their compromised hosts, and handle payload delivery. The web-based admin panel has been identified in connection with a supply chain attack campaign dubbed Operation ...

Threat actors with ties to North Korea have likely become the latest to exploit the recently disclosed critical React2Shell security flaw in React Server Components (RSC) to deliver a previously undocumented remote access trojan dubbed EtherRAT . "EtherRAT leverages Ethereum smart contracts for command-and-control (C2) resolution, deploys five independent Linux persistence mechanisms, and downloads its own Node.js runtime from nodejs.org," Sysdig said in a report published Monday. The cloud security firm said the activity exhibits significant overlap with a long-running campaign codenamed Contagious Interview , which has been observed leveraging the EtherHiding technique to distribute malware since February 2025. Contagious Interview is the name given to a series of attacks in which blockchain and Web3 developers, among others, are targeted through fake job interviews, coding assignments, and video assessments, leading to the deployment of malware. These efforts typi...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has urged federal agencies to patch the recent React2Shell vulnerability by December 12, 2025, amid reports of widespread exploitation. The critical vulnerability, tracked as CVE-2025-55182 (CVSS score: 10.0), affects the React Server Components (RSC) Flight protocol. The underlying cause of the issue is an unsafe deserialization that allows an attacker to inject malicious logic that the server executes in a privileged context. It also affects other frameworks, including Next.js, Waku, Vite, React Router, and RedwoodSDK. "A single, specially crafted HTTP request is sufficient; there is no authentication requirement, user interaction, or elevated permissions involved," Cloudforce One, Cloudflare's threat intelligence team, said . "Once successful, the attacker can execute arbitrary, privileged JavaScript on the affected server." Since its public disclosure on December 3, 2025, the shortcoming...

React2Shell continues to witness heavy exploitation, with threat actors leveraging the maximum-severity security flaw in React Server Components (RSC) to deliver cryptocurrency miners and an array of previously undocumented malware families, according to new findings from Huntress. This includes a Linux backdoor called PeerBlight, a reverse proxy tunnel named CowTunnel, and a Go-based post-exploitation implant referred to as ZinFoq. The cybersecurity company said it has observed attackers targeting numerous organizations via CVE-2025-55182, a critical security vulnerability in RSC that allows unauthenticated remote code execution. As of December 8, 2025, these efforts have been aimed at a wide range of sectors, but prominently the construction and entertainment industries. The first recorded exploitation attempt on a Windows endpoint by Huntress dates back to December 4, 2025, when an unknown threat actor exploited a vulnerable instance of Next.js to drop a shell script, follo...

Cybersecurity researchers have identified several malicious packages across npm, Python, and Ruby ecosystems that leverage Discord as a command-and-control (C2) channel to transmit stolen data to actor-controlled webhooks. Webhooks on Discord are a way to post messages to channels in the platform without requiring a bot user or authentication, making them an attractive mechanism for attackers to exfiltrate data to a channel under their control. "Importantly, webhook URLs are effectively write-only," Socket researcher Olivia Brown said in an analysis. "They do not expose channel history, and defenders cannot read back prior posts just by knowing the URL." The software supply chain security company said it identified a number of packages that use Discord webhooks in various ways - mysql-dumpdiscord (npm), which siphons the contents of developer configuration files like config.json, .env, ayarlar.js, and ayarlar.json to a Discord webhook nodejs.discord (npm...

Cybersecurity researchers have called attention to a "massive campaign" that has systematically targeted cloud native environments to set up malicious infrastructure for follow-on exploitation. The activity, observed around December 25, 2025, and described as "worm-driven," leveraged exposed Docker APIs, Kubernetes clusters, Ray dashboards, and Redis servers, along with the recently disclosed React2Shell (CVE-2025-55182, CVSS score: 10.0) vulnerability. The campaign has been attributed to a threat cluster known as TeamPCP (aka DeadCatx3, PCPcat, PersyPCP, and ShellForce). TeamPCP is known to be active since at least November 2025, with the first instance of Telegram activity dating back to July 30, 2025. The TeamPCP Telegram channel currently has over 700 members, where the group publishes stolen data from diverse victims across Canada, Serbia, South Korea, the U.A.E., and the U.S. Details of the threat actor were first documented by Beelzebub in December 2025...

This week showed just how fast things can go wrong when no one’s watching. Some attacks were silent and sneaky. Others used tools we trust every day — like AI, VPNs, or app stores — to cause damage without setting off alarms. It’s not just about hacking anymore. Criminals are building systems to make money, spy, or spread malware like it’s a business. And in some cases, they’re using the same apps and services that businesses rely on — flipping the script without anyone noticing at first. The scary part? Some threats weren’t even bugs — just clever use of features we all take for granted. And by the time people figured it out, the damage was done. Let’s look at what really happened, why it matters, and what we should all be thinking about now. ⚡ Threat of the Week Silently Patched Fortinet Flaw Comes Under Attack — A vulnerability that was patched by Fortinet in FortiWeb Web Application Firewall (WAF) has been exploited in the wild since early October 2025 by threat actors to c...

In cybersecurity, the line between a normal update and a serious incident keeps getting thinner. Systems that once felt reliable are now under pressure from constant change. New AI tools, connected devices, and automated systems quietly create more ways in, often faster than security teams can react. This week’s stories show how easily a small mistake or hidden service can turn into a real break-in. Behind the headlines, the pattern is clear. Automation is being used against the people who built it. Attackers reuse existing systems instead of building new ones. They move faster than most organizations can patch or respond. From quiet code flaws to malware that changes while it runs, attacks are focusing less on speed and more on staying hidden and in control. If you’re protecting anything connected—developer tools, cloud systems, or internal networks—this edition shows where attacks are going next, not where they used to be. ⚡ Threat of the Week Critical Fortinet Flaw Comes Under...

Every week brings new discoveries, attacks, and defenses that shape the state of cybersecurity. Some threats are stopped quickly, while others go unseen until they cause real damage. Sometimes a single update, exploit, or mistake changes how we think about risk and protection. Every incident shows how defenders adapt — and how fast attackers try to stay ahead. This week’s recap brings you the key moments that matter most, in one place, so you can stay informed and ready for what’s next. ⚡ Threat of the Week Google Disrupts IPIDEA Residential Proxy Network — Google has crippled IPIDEA, a massive residential proxy network consisting of user devices that are being used as the last-mile link in cyberattack chains. According to the tech giant, not only do these networks permit bad actors to conceal their malicious traffic, but they also open up users who enroll their devices to further attacks. Residential IP addresses in the U.S., Canada, and Europe were seen as the most desirable. ...

The North Korean threat actors behind the Contagious Interview campaign have continued to flood the npm registry with 197 more malicious packages since last month . According to Socket , these packages have been downloaded over 31,000 times, and are designed to deliver a variant of OtterCookie that brings together the features of BeaverTail and prior versions of OtterCookie. Some of the identified "loader" packages are listed below - bcryptjs-node cross-sessions json-oauth node-tailwind react-adparser session-keeper tailwind-magic tailwindcss-forms webpack-loadcss The malware, once launched, attempts to evade sandboxes and virtual machines, profiles the machine, and then establishes a command-and-control (C2) channel to provide the attackers with a remote shell, along with capabilities to steal clipboard contents, log keystrokes, capture screenshots, and gather browser credentials, documents, cryptocurrency wallet data, and seed phrases. It's worth notin...

Cybersecurity researchers have flagged a fresh software supply chain attack targeting the npm registry that has affected more than 40 packages that belong to multiple maintainers. "The compromised versions include a function (NpmModule.updatePackage) that downloads a package tarball, modifies package.json, injects a local script (bundle.js), repacks the archive, and republishes it, enabling automatic trojanization of downstream packages," supply chain security company Socket said . The end goal of the campaign is to search developer machines for secrets using TruffleHog's credential scanner and transmit them to an external server under the attacker's control. The attack is capable of targeting both Windows and Linux systems. The following packages have been identified as impacted by the incident - angulartics2@14.1.2 @ctrl/deluge@7.2.2 @ctrl/golang-template@1.4.3 @ctrl/magnet-link@4.0.4 @ctrl/ngx-codemirror@7.0.2 @ctrl/ngx-csv@6.0.2 @ctrl/ngx-emoji-mart@...