CVE-2026-22036 — Undici has an unbounded decompression chain in HTTP responses on Node.js Fetch API via Content-Encoding leads to reso…

CVE-2026-22036

Undici has an unbounded decompression chain in HTTP responses on Node.js Fetch API via Content-Encoding leads to resource exhaustion PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
nodejs / undici	affected < 6.23.0; affected >= 7.0.0, < 7.18.2

CWE

CWE-770

References

https://github.com/nodejs/undici/security/advisories/GHSA-g9mf-h72j-4rw9
https://github.com/nodejs/undici/commit/b04e3cbb569c1596f86c108e9b52c79d8475dcb3

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.