Vulnerability Monitor

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CVE-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 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.

Published

2026-01-14T19:16:47.833

Last Modified

2026-01-22T21:15:50.070

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-770
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application nodejs undici < 6.23.0 Yes
Application nodejs undici < 7.18.2 Yes
References