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5.4 Medium

CVE-2026-28755 NGINX Plus and NGINX Open Source have a vulnerability in the ngx_stream_ssl_module module due to the improper handling…

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 products and versions

Product Affected versions Fixed in
NGINX Open Source 1.29 1.29.0 → < 1.29.7 1.29.7
NGINX Open Source 1.27 1.27.2 → < 1.28.3 1.28.3
NGINX Plus Versions not published

References

Timeline

  1. Published
  2. Last modified

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