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Vulnerabilities

Vulnerability · CVE-2026-97629

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 r

Published Oct 14, 2026 · catalog updated Oct 18, 2026 · Description When NGINX Plus

Check if you run it

No confirmed exploitation is on record for CVE-2026-97629. EPSS is 0.18%. Act only if a listed version of Description When NGINX Plus is installed.

Severity
High8.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Advisory link
Affected products
Debian:12 nginx · Debian:13 nginx · Debian:14 nginx

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 nginx1.22.1-9, 1.22.1-9+deb12u1, 1.22.1-9+deb12u10
  • Debian:13 nginx1.26.3-3, 1.26.3-3+deb13u1, 1.26.3-3+deb13u2
  • Debian:14 nginx0 → 1.30.4-8

How to fix CVE-2026-97629

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-97629. EPSS is 0.18%. Act only if a listed version of Description When NGINX Plus is installed.

Which versions are affected?

Compare what you have installed with 1.22.1-9, 1.22.1-9+deb12u1, 1.22.1-9+deb12u10, 1.26.3-3, 1.26.3-3+deb13u1, 1.26.3-3+deb13u2, 0 → 1.30.4-8. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-908: Use of Uninitialized Resource. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian securityNginx security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · NIST NVD

    Detected

    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

  2. Oct 14, 2026 · NIST NVD

    Updated

    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

  3. Oct 15, 2026 · NIST NVD

    Updated

    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

  4. Oct 18, 2026 · Trivy Vulnerability DB

    Fix available

    nginx fixed in 1.30.4-8

  5. Oct 18, 2026 · Trivy Vulnerability DB

    Fix available

    nginx fixed in 1.30.4-8

  6. Oct 18, 2026 · Trivy Vulnerability DB

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-97629

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-97629

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-97629

    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 sess

    nvd.nist.gov
  • Trivy Vulnerability DBPackage advisoryDEBIAN-CVE-2026-97629

    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 session

    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.