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@renovate renovate bot commented Jan 15, 2026

This PR contains the following updates:

Package Change Age Confidence
undici (source) 6.21.36.23.0 age confidence

GitHub Vulnerability Alerts

CVE-2026-22036

Impact

The fetch() API supports chained HTTP encoding algorithms for response content according to RFC 9110 (e.g., Content-Encoding: gzip, br). This is also supported by the undici decompress interceptor.

However, the number of links in the decompression chain is unbounded and the default maxHeaderSize allows a malicious server to insert thousands compression steps leading to high CPU usage and excessive memory allocation.

Patches

Upgrade to 7.18.2 or 6.23.0.

Workarounds

It is possible to apply an undici interceptor and filter long Content-Encoding sequences manually.

References


Release Notes

nodejs/undici (undici)

v6.23.0

Compare Source

Full Changelog: nodejs/undici@v6.22.0...v6.23.0

v6.22.0

Compare Source

What's Changed

Full Changelog: nodejs/undici@v6.21.3...v6.22.0


Configuration

📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.


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