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    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 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.

    Published:Oct 14, 2026
    Last Modified:Oct 20, 2026
    EPS:Oct 14, 2026
    EPSS Score:0.00175
    CVSS Score:6.5

    Affected Products

    Vendor
    F5
    Product
    Nginx Open Source
    Vendor
    F5
    Product
    Nginx Plus

    Exploits

    https://github.com/PhiNode-Labs/nginx-cve-2026-97629https://github.com/piecar21/CVE-2026-97629

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High