CVE-2026-28755
March 24, 2026
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 Packages
https://github.com/nginx/nginx.git (GITHUB):
Affected version(s) >=release-0.1.0 <release-1.28.3Fix Suggestion:
Update to version release-1.28.3https://github.com/nginx/nginx.git (GITHUB):
Affected version(s) >=release-0.1.0 <release-1.28.3Fix Suggestion:
Update to version release-1.28.3https://github.com/nginx/nginx.git (GITHUB):
Affected version(s) >=release-1.29.0 <release-1.29.7Fix Suggestion:
Update to version release-1.29.7https://github.com/nginx/nginx.git (GITHUB):
Affected version(s) >=release-0.1.0 <release-1.28.3Fix Suggestion:
Update to version release-1.28.3https://github.com/nginx/nginx.git (GITHUB):
Affected version(s) >=release-1.29.0 <release-1.29.7Fix Suggestion:
Update to version release-1.29.7https://github.com/nginx/nginx.git (GITHUB):
Affected version(s) >=release-1.29.0 <release-1.29.7Fix Suggestion:
Update to version release-1.29.7Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
EPSS
Base Score:
0.01
