Riskcovery

CVE-2026-97629

NGINX ngx_http_ssl_module vulnerability

State
Published
Severity
8.3 High
Published
Oct 14, 2026
Updated
Oct 29, 2026
Reserved
Sep 30, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.08.3 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:Nf5
3.16.5 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:Nf5

Weaknesses

  • CWE-908 Use of Uninitialized Resource

Affected Products

ProductVersions
NGINX PlusF5
  • 37.1.0 to before 37.1.0.1Affected
  • 37.0.0 to before 37.0.5.1Affected
  • R36 and laterAffected
  • R35 and laterAffected
  • R34 and laterAffected
  • R33 and laterAffected
NGINX Open SourceF5
  • 1.31.0 to before 1.31.7Affected
  • 1.30.0 to before 1.30.6Affected
  • 1.23.3 and laterAffected

References

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