Bug 2552364 (CVE-2026-97629) - CVE-2026-97629 nginx: nginx: Client certificate verification bypass via forged SSL sessions
Summary: CVE-2026-97629 nginx: nginx: Client certificate verification bypass via forge...
Keywords:
Status: NEW
Alias: CVE-2026-97629
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-14 14:53 UTC by OSIDB Bzimport
Modified: 2026-10-19 14:10 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-14 14:53:26 UTC 
Description
When NGINX Plus or NGINX Open Source is configured with ssl_session_cache 

shared:name:size

without an explicit ssl_session_ticket_key file directives to automatically rotate SSL session ticket keys, a remote unauthenticated attacker is able to forge client SSL sessions 

in a non-deterministic manner that is beyond the attacker's control. An attacker could leverage this vulnerability to bypass verification of client certificates.

Impact


This vulnerability can lead to the exposure of resources or functionality to unintended actors, possibly providing attackers with access to sensitive information. There is no control plane exposure; this is a data plane issue only.






Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
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