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The web’s having a rough week. Here’s how to browse safely

You recognize the website. You’ve visited it before. You may even have it bookmarked. Then it asks you to do something unusual: install an update, allow notifications, or run a command to prove you’re human. Stop and check first. A website you trust can still display instructions you shouldn’t follow. Our researchers have documented attacks in which criminals hacked legitimate websites and used them to deliver fake verification pages that trick visitors into installing malware. Within the same…

PHP Node.js WordPress US

tg: varování tg: návod tg: propagace tp: malware tp: phishing

27. 10. 2026 13:22 · Malwarebytes Labs · The web’s having a rough week. Here’s how to browse safely

NCSC-2026-0453 [1.00] [M/H] Kwetsbaarheid in Google Brotli-decoder

Google heeft een kwetsbaarheid verholpen in de Brotli-decompressiebibliotheek. Deze bibliotheek wordt onder meer gebruikt in Node.js. Een ongeauthenticeerde kwaadwillende kan de kwetsbaarheid op afstand misbruiken door speciaal vervaardigde Brotli-gecomprimeerde gegevens te laten verwerken. Succesvol misbruik kan leiden tot een denial-of-service, toegang tot gevoelige gegevens uit het procesgeheugen of het uitvoeren van willekeurige code met de rechten van het getroffen proces.

Google Node.js NL

tg: zranitelnost tp: dodavatelský řetězec

23. 10. 2026 11:55 · NCSC-NL · NCSC-2026-0453 [1.00] [M/H] Kwetsbaarheid in Google Brotli-decoder

Multiples vulnérabilités dans Node (22 octobre 2026)

De multiples vulnérabilités ont été découvertes dans Node.js. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un contournement de la politique de sécurité et un problème de sécurité non spécifié par l'éditeur.

Node.js FR

tg: zranitelnost

22. 10. 2026 · zachyceno 16:30 · CERT-FR – avis · Multiples vulnérabilités dans Node (22 octobre 2026)

CVE-2026-21711 A flaw in Node.js Permission Model network enforcement leaves Unix Domain Socket (UDS) server operations without the required permission checks, while all comparable network paths correctly enforce them. As a result, code running under `--permission` without `--allow-net` can create and expose local IPC endpoints, allowing communication with other processes on the same host outside of the intended network restriction boundary. This vulnerability affects Node.js **25.x** processes using the Permission Model where `--allow-net` is intentionally omitted to restrict network access. Note that `--allow-net` is currently an experimental feature.

Information published.

EPSS 0.00 CVE-2026-21711 Node.js US

31. 5. 2026 · Microsoft Security · CVE-2026-21711 A flaw in Node.js Permission Model network enforcement leaves Unix Domain Socket (UDS) server operations without the required permission checks, while all comparable network paths correctly enforce them. As a result, code running under `--permission` without `--allow-net` can create and expose local IPC endpoints, allowing communication with other processes on the same host outside of the intended network restriction boundary. This vulnerability affects Node.js **25.x** processes using the Permission Model where `--allow-net` is intentionally omitted to restrict network access. Note that `--allow-net` is currently an experimental feature.

Node.js Trust Falls: Dangerous Module Resolution on Windows

In September of 2024, ZDI received a vulnerability submission from an anonymous researcher affecting npm CLI that revealed a fundamental design issue in Node.js. This blog details how it continues to expose applications to local privilege escalation (LPE) attacks on Windows systems, including the Discord desktop app (CVE-2026-0776 0-Day), which remains unpatched and vulnerable. The issue is straightforward: when Node.js resolves modules, the runtime searches for packages in C:\node_modules as…

EPSS 0.00 CVE-2026-0775 CVE-2026-0776 Node.js npm Discord US

8. 4. 2026 18:18 · ZDI Blog · Node.js Trust Falls: Dangerous Module Resolution on Windows

CVE-2025-23167 A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`. This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests. The issue was resolved by upgrading `llhttp` to version 9, which enforces correct header termination. Impact: * This vulnerability affects only Node.js 20.x users prior to the `llhttp` v9 upgrade.

Information published.

EPSS 0.01 CVE-2025-23167 Node.js US

4. 9. 2025 · Microsoft Security · CVE-2025-23167 A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`. This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests. The issue was resolved by upgrading `llhttp` to version 9, which enforces correct header termination. Impact: * This vulnerability affects only Node.js 20.x users prior to the `llhttp` v9 upgrade.

CVE-2024-36137 A vulnerability has been identified in Node.js, affecting users of the experimental permission model when the --allow-fs-write flag is used. Node.js Permission Model do not operate on file descriptors, however, operations such as fs.fchown or fs.fchmod can use a "read-only" file descriptor to change the owner and permissions of a file.

Information published.

EPSS 0.00 CVE-2024-36137 Node.js US

4. 9. 2025 · Microsoft Security · CVE-2024-36137 A vulnerability has been identified in Node.js, affecting users of the experimental permission model when the --allow-fs-write flag is used. Node.js Permission Model do not operate on file descriptors, however, operations such as fs.fchown or fs.fchmod can use a "read-only" file descriptor to change the owner and permissions of a file.

CVE-2024-22018 A vulnerability has been identified in Node.js, affecting users of the experimental permission model when the --allow-fs-read flag is used. This flaw arises from an inadequate permission model that fails to restrict file stats through the fs.lstat API. As a result, malicious actors can retrieve stats from files that they do not have explicit read access to. This vulnerability affects all users using the experimental permission model in Node.js 20 and Node.js 21. Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.

Information published.

EPSS 0.00 CVE-2024-22018 Node.js US

4. 9. 2025 · Microsoft Security · CVE-2024-22018 A vulnerability has been identified in Node.js, affecting users of the experimental permission model when the --allow-fs-read flag is used. This flaw arises from an inadequate permission model that fails to restrict file stats through the fs.lstat API. As a result, malicious actors can retrieve stats from files that they do not have explicit read access to. This vulnerability affects all users using the experimental permission model in Node.js 20 and Node.js 21. Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.