anonhaven

CVE-2026-97629

HIGH CVSS 4.0: 8.3 EPSS 0.18%
Updated Oct 15, 2026
Nginx
Parameter Value
CVSS 8.3 (HIGH)
Type CWE-908 (Use of Uninitialized Resource)
Vendor Nginx
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)

CWE-908 Use of Uninitialized Resource

References 1

https://my.f5.com/manage/s/article/K000162606
f5sirt@f5.com
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