CVE-2026-22036
published 2026-01-14CVE-2026-22036: 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…
high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
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
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | node-undici | < node-undici 7.18.2+dfsg+~cs3.2.0-1 (forky) | node-undici 7.18.2+dfsg+~cs3.2.0-1 (forky) |
| nodejs | undici | < 6.23.0 | 6.23.0 |
| nodejs | undici | — | — |
| nodejs | undici | >= 0 < 6.23.0 | 6.23.0 |
| nodejs | undici | >= 7.0.0 < 7.18.2 | 7.18.2 |
| nodejs | undici | >= 7.0.0 < 7.18.2 | 7.18.2 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
ghsa6.5MEDIUM
osv7.5HIGH