CVE-2026-28755
Fixed in a distro release EPSS <1%CVSS 5.4
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.
Products: F5 NGINX Open Source, F5 NGINX Plus
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.22 | nginx | 1.28.3-r0 |
| Alpine 3.23 | nginx | 1.28.3-r0 |
| Alpine 3.24 | nginx | 1.28.3-r0 |
| Amazon Linux 2023 | nginx | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-all-modules | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-core | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-filesystem | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-devel | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-http-image-filter | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-http-perl | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-http-xslt-filter | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-mail | 1:1.28.3-1.amzn2023.0.1 |
| Amazon Linux 2023 | nginx-mod-stream | 1:1.28.3-1.amzn2023.0.1 |
| Chainguard | nginx-mainline | 1.29.7-r0 |
| Chainguard | nginx-stable | 1.28.3-r0 |
| Debian 14 | nginx | 1.28.3-2 |
| Red Hat hummingbird 1 | nginx | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-all-modules | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-core | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-filesystem | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-mod-devel | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-mod-http-geoip | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-mod-http-image-filter | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-mod-http-perl | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-mod-http-xslt-filter | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-mod-mail | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-mod-stream | 0:1.30.0-1.hum1 |
| Red Hat hummingbird 1 | nginx-mod-stream-geoip | 0:1.30.0-1.hum1 |
| Ubuntu 22.04 LTS | nginx | 1.18.0-6ubuntu14.10 |
| Ubuntu 24.04 LTS | nginx | 1.24.0-2ubuntu7.7 |
| Ubuntu 25.10 | nginx | 1.28.0-6ubuntu1.2 |
| Wolfi | nginx-mainline | 1.29.7-r0 |
| Wolfi | nginx-stable | 1.28.3-r0 |
| openSUSE Tumbleweed | nginx | 1.29.7-1.1 |