Node.js security covers vulnerabilities, dependency risks, and runtime defenses that can affect server-side applications and their data.
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Background for this topic.
Node.js is an open-source, cross-platform runtime that executes JavaScript outside a web browser, using Google’s V8 engine. Its event-driven, non-blocking input/output model is widely used for web servers, APIs, command-line tools, and backend services. The runtime is not itself an application framework; security outcomes depend substantially on the code and modules running within it.
Security concerns include vulnerabilities in the Node.js runtime, insecure application logic such as injection or server-side request forgery, and risks from the large npm dependency ecosystem. Malicious or compromised packages, unsafe install scripts, transitive dependencies, and prototype-pollution flaws can expand an application’s attack surface. Practitioners should track runtime and package advisories, use lockfiles and dependency review, restrict package-install and process permissions where practical, validate untrusted input, and protect credentials and session data. During incidents, dependency inventories and build records help determine whether a vulnerable module or runtime was deployed.
Weekly headline count for the current query.
Malware Harvested Cloud Credentials, Source Code and Deployment TokensAttackers used a compromised npm publishing credential to release five malicious versions of Jscrambler's Code Integrity package, deploying a Rust-based infostealer that harvested developer, cloud and AI tool credentials while evolving its delivery methods to evade detection.
Microsoft-Owned GitHub, Which Runs npm, Previews Supply-Chain Security FixesThe popular Mastra AI framework, used to build artificial intelligence agents, workflows and retrieval-augmented generation pipelines, has been poisoned by attackers, and Microsoft-owned GitHub has advised all developers to downgrade Mastra, pending compromised packages being found and eradicated.
Also, YellowKey Gets CVE, 7-Eleven Breach, Linux Maintainers Warn on AI Bug SpamThis week, more incidents than we can list here. Among them: cloned Shai-Hulud malware, a new maximum CVSS Cisco flaw. Edge to stop loading passwords in plaintext. Tycoon 2FA offers a way around Microsoft multifactor. Convenience, taquitos and data breach: The 7-Eleven story. A MENA crackdown.
Malicious npm Package Lets Attackers Capture Refreshed TokensA researcher has mapped a five-step attack on Claude Code that intercepts the credentials giving AI agents access to Jira, GitHub and Confluence, and demonstrated that the standard incident response move, rotating the stolen token, hands the attacker a fresh one.
Latest Mini Shai-Hulud Worm Steals Credentials, Includes Wiper, Now Open SourceA new Shai-Hulud variant has infected multiple npm repositories and jumped to other widely used JavaScript and Python packages. Designed to rapidly propagate, the worm steals over 100 different types of credentials and can wipe systems, including if developers try to delete it.
Expect Fallout After Remote Access Trojan Added to Popular JavaScript NPM PackageA supply-chain attack backdoored versions of Axios, a popular JavaScript library that's present in many different software packages, to distribute a cross-platform, remote access Trojan. Identifying the full fallout from the attack could take some time, experts warned.
Also: NodeCordRAT Malware, North Korean QR-Phishing CampaignThis week, U.K. crypto exchanges linked to Iranian sanctions evasion, NodeCordRAT malware spread via npm, an FBI alert on North Korean QR-code phishing, illicit crypto hit $154 billion in 2025 and U.S. President Donald Trump said he won't pardon Sam Bankman-Fried.
Variant Likely in Beta Stage, Aikido Researcher SaidHackers behind the Shai Hulud malicious npm JavaScript campaign are likely testing a new variant of the malware. Security researchers at Aikido on Sunday uncovered a new Shai Hulud variant.
Also, Microsoft Badly Patches LNK Flaw, Australian Sentenced for 'Evil Twin' HackThis week, the React flaw, a belated Windows fix, Defense Secretary Pete Hegseth's Signal group posed operational risk, more North Korean npm packages. An Australian jailed for Wi-Fi "evil twin" crimes. The US FTC will send $15.3 million to Avast users. A London council said attackers stole data.
Also: npm Packages Infiltrated, FBI Issues Fraud Alert, Campbell's Soup Cans CISOThis week, a recently fixed Oracle flaw is being actively exploited, Shelly tackled Pro 4PM DoS bug, "Shai-Hulud 2.0" hit npm, the FBI warned of rising bank account takeover scams, regulators fined Comcast over a vendor breach, Iberia reported a supplier incident and Campbell's canned its CISO.
Backdoored NPM Module Sent Sensitive Mail Copies to Threat ActorA patient hacker hooked victims by building a reliable tool integrated into hundreds of developer workflows that connects artificial intelligence agents with an email platform. The unidentified software engineer published 15 "flawless" versions until he slipped in code copying users' emails.
JavaScript Repository Contends With Wormable Malicious CodeAn apparent "Dune" aficionado is responsible for the first self-propagating attack on the npm JavaScript repository in what one security company has called one of the most severe JavaScript supply-chain attacks so far. A malicious script exfiltrated data to GitHub repositories named "Shai-Hulud."
Also: Hackers Use Ethereum Smart Contracts to Hide Malicious npm CodeSwissBorg $41M hack, hidden malicious npm code, sanctions on Southeast Asian networks, California launderer's sentencing, Kinto's shuttering, Venus Protocol pays back victim, Nemo Protocol hack, DOJ's $5M recovery effort, Lagarde's proposed rules and the SEC-CFTC plan for market clarity.
Attacker Socially Engineered Developer With Phishing EmailA hacker laced 18 popular npm packages with cryptocurrency stealing malware after socially engineering the developer into giving up his credentials to the JavaScript runtime environment. Aikido Security said the 18 software packages collectively have downloads of more than two billion each week.
Also: PowerShell-Based Cryptojacking Attack, a Malvertising CampaignThis week, El Salvador split its bitcoin reserve, an Indian court jailed cops for crypto kidnapping, a PowerShell-based cryptojacking attack, a malvertising campaign targeted Android users, a Venus Protocol hack, malware hid in npm packages using smart contracts for evasion and Bunni DEX exploit.
67 Malicious Packages, XORIndex Loader Target JavaScript Code-Sharing PlatformNorth Korean threat actors escalated their software supply chain attacks by uploading 67 new malicious packages to the npm Registry as part of the ongoing Contagious Interview campaign. The malware targets open-source JavaScript developers with malware loaders.
Malicious Packages Hide Scripts for Mapping Enterprise NetworksA hacking campaign is spreading malicious reconnaissance scripts downloaded more than 3,000 times from the JavaScript runtime environment npm repository, warn researchers. The reconnaissance script is likely a harbinger of worse things to come.
North Korea's Lazarus Deploys Malicious NPM Packages to Steal DataNorth Korea's Lazarus Group expanded a malicious campaign of uploading malicious code to the JavaScript runtime environment npm repository, publishing 11 packages embedded with Trojan loaders. Researchers identified 11 malicious packages in the repository, a hotspot for supply chain attacks.
Also: FamousSparrow Is Back, Snowflake Hacker Agrees to ExtraditionThis week, Signal update, FamousSparrow is back, suspected Snowflake hacker agreed to U.S. extradition, train tickets sales hack in Ukraine, a patched Chrome zero-day, phishing targets SEO pros, DrayTek router outage, South African chicken producer attacked, and bad npm packages.
Also: Hackers Use npm Packages, MassJacker Malware and Fake $TrumpThis week, Garantex admin arrested, hackers used npm packages to steal crypto data and deployed MassJacker malware to steal coins, infected victims with $Trump lures. Also, U.S. authorities seized hacked Ripple funds and a California warning about scams.