{"id":"CVE-2026-28755","state":"PUBLISHED","title":"NGINX ngx_stream_ssl_module vulnerability","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.   \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","publishedAt":"2026-03-24T14:13:26.502Z","updatedAt":"2026-03-24T15:24:16.108Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","source":"f5"},"assigner":"f5","products":["F5 NGINX Open Source","F5 NGINX Plus"],"affected":[{"vendor":"F5","product":"NGINX Open 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