Bug 2477068 (CVE-2026-42926) - CVE-2026-42926 nginx: NGINX Open Source: Data injection via HTTP/2 proxy configuration
Summary: CVE-2026-42926 nginx: NGINX Open Source: Data injection via HTTP/2 proxy conf...
Keywords:
Status: NEW
Alias: CVE-2026-42926
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2481132
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-13 16:02 UTC by OSIDB Bzimport
Modified: 2026-10-16 09:51 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-05-13 16:02:23 UTC 
When NGINX Open Source is configured to proxy HTTP/2 traffic by setting proxy_http_version to 2, and also uses proxy_set_body, an attacker may be able to inject frame headers and payload bytes to the upstream peer.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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