Bug 2429741 (CVE-2026-22036) - CVE-2026-22036 undici: Undici: Denial of Service via excessive decompression steps
Summary: CVE-2026-22036 undici: Undici: Denial of Service via excessive decompression ...
Keywords:
Status: NEW
Alias: CVE-2026-22036
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2430293 2430294 2430295 2430296 2430297 2430298 2430299 2430300
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-14 20:01 UTC by OSIDB Bzimport
Modified: 2026-04-29 07:35 UTC (History)
51 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-01-14 20:01:29 UTC 
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.
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