VULNERABILITY INTELLIGENCE

CVE-2026-22036

CVSS score5.9 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2026-01-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-770

Primary references