Skip to main content
← All vulnerabilities
CVE-2026-97629

NGINX ngx_http_ssl_module vulnerability

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 37.1.0.1, 37.0.5.1, 1.31.7, 1.30.6
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • F5 NGINX Plus

    From 37.1.0 · fixed in 37.1.0.1; From 37.0.0 · fixed in 37.0.5.1; From R36; From R35; From R34; From R33

  • F5 NGINX Open Source

    From 1.31.0 · fixed in 1.31.7; From 1.30.0 · fixed in 1.30.6; From 1.23.3

References 2

my.f5.com

GitHub · PhiNode-Labs/nginx-cve-2026-97629