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CVE-2026-1526 The advisory has been revoked - it doesn't affect any version of package nodejs24-devel  (opens in a new tab)

Threat Intelligence

EPSS
1.28% (71st percentile)

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  • Snyk IDSNYK-ALMALINUX10-NODEJS24DEVEL-16081864
  • published16 Apr 2026
  • disclosed9 Apr 2026
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Introduced: 9 Apr 2026

CVE-2026-1526  (opens in a new tab)

Amendment

The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs24-devel package and not the nodejs24-devel package as distributed by AlmaLinux.

The undici WebSocket client is vulnerable to a denial-of-service attack via unbounded memory consumption during permessage-deflate decompression. When a WebSocket connection negotiates the permessage-deflate extension, the client decompresses incoming compressed frames without enforcing any limit on the decompressed data size. A malicious WebSocket server can send a small compressed frame (a "decompression bomb") that expands to an extremely large size in memory, causing the Node.js process to exhaust available memory and crash or become unresponsive.

The vulnerability exists in the PerMessageDeflate.decompress() method, which accumulates all decompressed chunks in memory and concatenates them into a single Buffer without checking whether the total size exceeds a safe threshold.

References