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I. Basic Information for CVE-2026-28755
Vulnerability Information

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Vulnerability Title
NGINX ngx_stream_ssl_module vulnerability
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
F5 NGINX Plus和F5 NGINX Open Source 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
F5 NGINX Plus和F5 NGINX Open Source都是美国F5公司的产品。F5 NGINX Plus是一个基于软件的应用程序交付平台。F5 NGINX Open Source是一个高性能Web服务器、反向代理服务器、负载均衡器和API网关。 F5 NGINX Plus和F5 NGINX Open Source存在安全漏洞,该漏洞源于ngx_stream_ssl_module模块对已吊销证书处理不当,可能导致OCSP检查标识证书已吊销后TLS握手仍成功。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
F5NGINX Open Source 1.29.0 ~ 1.29.7 -
F5NGINX Plus R36 ~ R36 P3 -
II. Public POCs for CVE-2026-28755
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III. Intelligence Information for CVE-2026-28755
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IV. Related Vulnerabilities
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