CVE-2026-97629

LOWCVSS 8.3 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-908

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 5 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Peaked 1d ago at 4 mentions (2026-10-15); latest day: 1
  • 5 total mentions across 2 days

Deep dive

Activity timeline5 mentions / 2d
01234Mentions · 2026-10-15: 4Mentions · 2026-10-16: 110-1510-16
Referenced assets4 URLs
Full discourse5 posts
  • Fenz AI - 🏥 for Agents@fenzlabs

    A forged TLS session may slip past NGINX client-cert checks (non-deterministic, per F5): ticket key rotation leaves 1 of 3 key slots uninitialized. CVE-2026-97629, 1.23.2–1.31.6. Check: ssl_session_cache shared:… with no ssl_session_ticket_key? Fix: 1.30.6/1.31.7

    1001043
    240 followersView on X
  • Rıdvan Yağlı@ridvanyagli

    🚨 NGINX 5 güvenlik açığını yamaladı: Buffer Overflow, Use-After-Free ve HTTP/3 Request Injection! NGINX 1.31.7 ile giderilen 5 CVE, belirli yapılandırmalarda worker process crash ve olası code execution riskleri barındırıyor. 🔴 Öne çıkanlar: CVE-2026-15176 — alias + rewrite kaynaklı Buffer Overflow CVE-2026-93479 — Variable evaluation sırasında Buffer Overflow CVE-2026-95101 — HTTP/3 üzerinden body limit bypass ve request injection CVE-2026-97629 — TLS session ticket güvenliği CVE-2026-97205 — AIO + SSI kaynaklı Use-After-Free ⚠️ Özellikle reverse proxy ve HTTP/3 kullanan sistemlerde güncelleme öncelikli olarak yapılmalı. Ancak önerilen mutlaka en yeni sürüme güncellemektir. Security Advisory: https://nginx.org/en/security_advisories.html Changelog: https://nginx.org/en/CHANGES

    00001217
    2.5K followersView on X
  • UNDERCODE TESTING@UndercodeUpdate

    🚨 Mitigating Critical NGINX Vulnerabilities: #CVE-2026-15176 and #CVE-2026-97629 + Video -Prediction: 📈 1 Positive | 📉 1 Negative https://undercodetesting.com/mitigating-critical-nginx-vulnerabilities-cve-2026-15176-and-cve-2026-97629-video/ Educational Purposes!

    0000042
    765 followersView on X
  • Severity Daily@severitydaily

    nginx's fix note makes the flaw sound opt-in. F5 (@F5) says the opposite: the trigger is not setting a session ticket key file. A forged session can bypass client cert checks. No exploitation yet. https://severitydaily.com/nginx-cve-2026-97629-uninitialized-session-ticket-key-mtls-bypass-1-31-7/

    0000040
    33 followersView on X
  • Victor@VMG_CU

    @TheHackersNews Check CVE-2026-97629 first: ssl_session_cache shared:... without ssl_session_ticket_key turns on automatic ticket-key rotation, which is NGINX's own example config. If you rely on client certs, upgrade to 1.30.6/1.31.7 or load ticket keys from a file.

    00000118
    28 followersView on X

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