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CVE-2026-28755

MEDIUM CVSS: 5.4 Published: 2026-03-24 Modified: 2026-06-17

Description

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_stream_ssl_module module due to the improper handling of revoked certificates when configured with the ssl_verify_client on and ssl_ocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the certificate as revoked.   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected Platforms

F5 Nginx Open SourceF5 Nginx Plus

Weakness Type

CWE-863

References