CVE-2026-22036
Description
Undici is an HTTP/1.1 client for Node.js. Prior to 7.18.0 and 6.23.0, 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. This vulnerability is fixed in 7.18.0 and 6.23.0.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | forky | fixed | 7.18.2+dfsg+~cs3.2.0-1 |
| debian | sid | fixed | 7.18.2+dfsg+~cs3.2.0-1 |
| debian | trixie | affected | |
References
- https://github.com/nodejs/undici/security/advisories/GHSA-g9mf-h72j-4rw9
- https://nvd.nist.gov/vuln/detail/CVE-2026-22036
- https://github.com/nodejs/undici/commit/b04e3cbb569c1596f86c108e9b52c79d8475dcb3
- https://github.com/nodejs/undici
- https://www.suse.com/security/cve/CVE-2026-22036.html
- https://security-tracker.debian.org/tracker/CVE-2026-22036
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.