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26.5.1
RELEASE PATCH Node.js & npm Node.js · released July 29, 2026 · covered July 29, 2026

Node.js 26.5.1 Released

Node.js 26.5.1 has been published on the official release channel. No detailed changelog notes were provided with this release.

Version 26.5.1 Node.js release series
AI summary

Node.js 26.5.1 has been published as part of the Node.js release series. This update follows the project's standard release cadence, which regularly ships fixes and small improvements on top of the current release line. As no detailed changelog content was supplied for this specific version, this briefing is intentionally kept concise.

What we know

This release package did not include specific notes describing the changes bundled into 26.5.1. Node.js release announcements are published on the official Node.js blog, and teams who need the exact list of commits, fixes, or dependency bumps included in this version should consult the official release page linked with this briefing.

How to update

As with any Node.js release, you can upgrade using your existing version manager (such as nvm, fnm, or volta) by installing version 26.5.1 directly, or by downloading the corresponding binary or installer from the official Node.js distribution channels. If you manage Node.js through a package manager like apt, dnf, or Homebrew, updating your local repository and running the standard upgrade command for your platform will pull in the new version once it is available there. It is good practice to review your CI pipelines and Docker base images to ensure they pin or float to the version you intend to run.

Compatibility considerations

Because no specific breaking changes or compatibility notes were included with this release package, treat this as a routine update within the 26.x line unless the official release notes indicate otherwise. As always, test your application against the new version in a staging environment before rolling it out broadly, particularly if your project depends on native addons or specific V8 engine behavior tied to the Node.js version.

Synthesized by AI from 1 source · updated 1 hour ago
Sources · merged by AI 1 total
notes ↗
LOW 2.5 Node.js & npm 10 Oct fast-jwt: Verifier cache accepts expired JWTs (CVE-2026-107719) fast-jwt's createVerifier cache can accept a previously valid signed JWT after its exp time when caching is enabled and the token has exp but no iat. The issue is fixed in 6.3.4. (Sources: OSV, NVD) Read full report → LOW 2.8 Node.js & npm 10 Oct msgpack5: Decoding negative int64 mutates input buffer (CVE-2026-107296) msgpack5 updates to 6.1.0 fix an issue where decoding a negative signed 64-bit integer can overwrite bytes in the caller-provided input buffer, causing silent corruption of retained or reused encoded data. (CVE-2026-107296, GHSA-qw35-55vc-rhgj) Read full report → LOW 3.4 Node.js & npm 10 Oct fast-jwt: clockTolerance = Infinity bypasses exp/nbf and persists in verifier cache (CVE-2026-107721) fast-jwt accepted Infinity for clockTolerance, letting exp and nbf checks always pass and allowing expired or not-yet-active JWTs to be accepted. Verifier cache entries created under that configuration can remain valid until eviction. The issue is fixed in 6.3.0. [CVE-2026-107721, GHSA-687g-22h4-j4w4] Read full report →
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