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CVE PROGRAM SOURCE RECORD5.9 Medium

CVE-2026-22036

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

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Status
Published
Published
Updated
Assigning organization
GitHub_M

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

nodejs undici

  • < 6.23.0affected
  • >= 7.0.0, < 7.18.2affected

References