CVE-2026-28755

CVSS Score & Metrics

Base Score

5.4 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N                                    

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.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Vulnerability Details

Published Date

March 24, 2026

Last Modified

March 26, 2026

CWE ID

CWE-863

Source

NVD

Vendor

F5

Product

NGINX Open Source, NGINX Plus

External References

https://my.f5.com/manage/s/article/K000160368

CVSS Score & Metrics

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