CVE-2026-22036
MEDIUMNodejs Undici < 6.23.0 - Resource Allocation Without Limits
Title source: ruleDescription
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.
Exploits (1)
github
WORKING POC
4 stars
by ctkqiang · gopoc
https://github.com/ctkqiang/CVE-Exploits/tree/main/CVE-2026-22036
Scores
CVSS v3
5.9
EPSS
0.0002
EPSS Percentile
5.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-770
Status
published
Products (2)
nodejs/undici
< 6.23.0
npm/undici
7.0.0 - 7.18.2npm
Published
Jan 14, 2026
Tracked Since
Feb 18, 2026