CVE-2026-28755
NGINX ngx_stream_ssl_module vulnerability
CVE-2026-28755 is fixed in 29 products on 1 platform, first by libnginx-mod-http-geoip 1.24.0-2ubuntu7.7, released March 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.4
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0014
3rd percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libnginx-mod-http-geoip · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | libnginx-mod-http-geoip 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| libnginx-mod-http-geoip · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | libnginx-mod-http-geoip 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| libnginx-mod-http-image-filter · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | libnginx-mod-http-image-filter 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| libnginx-mod-http-image-filter · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | libnginx-mod-http-image-filter 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| libnginx-mod-http-perl · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | libnginx-mod-http-perl 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| libnginx-mod-http-perl · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | libnginx-mod-http-perl 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| libnginx-mod-http-xslt-filter · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | libnginx-mod-http-xslt-filter 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| libnginx-mod-http-xslt-filter · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | libnginx-mod-http-xslt-filter 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| libnginx-mod-mail · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | libnginx-mod-mail 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| libnginx-mod-mail · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | libnginx-mod-mail 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| libnginx-mod-stream · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | libnginx-mod-stream 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| libnginx-mod-stream · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | libnginx-mod-stream 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| libnginx-mod-stream-geoip · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | libnginx-mod-stream-geoip 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| libnginx-mod-stream-geoip · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | libnginx-mod-stream-geoip 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| nginx · Debian 14 | 1.28.3-2 | DEBIAN-CVE-2026-28755 | Mar 24, 2026 |
| nginx · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | nginx 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| nginx · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | nginx 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| nginx · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-all-modules · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-common · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | nginx-common 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| nginx-common · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | nginx-common 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| nginx-core · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | nginx-core 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| nginx-core · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | nginx-core 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| nginx-core · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-core-debuginfo · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-debuginfo · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-debugsource · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-extras · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | nginx-extras 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| nginx-extras · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | nginx-extras 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| nginx-filesystem · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-full · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | nginx-full 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| nginx-full · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | nginx-full 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| nginx-light · Ubuntu 24.04.5 LTS (noble) | 1.24.0-2ubuntu7.7 | nginx-light 1.24.0-2ubuntu7.7 | Mar 24, 2026 |
| nginx-light · Ubuntu 25.10 (questing) | 1.28.0-6ubuntu1.2 | nginx-light 1.28.0-6ubuntu1.2 | Mar 24, 2026 |
| nginx-mod-devel · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-http-image-filter · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-http-image-filter-debuginfo · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-http-perl · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-http-perl-debuginfo · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-http-xslt-filter · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-http-xslt-filter-debuginfo · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-mail · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-mail-debuginfo · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-stream · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
| nginx-mod-stream-debuginfo · amzn 2023 | 1:1.28.3-1.amzn2023.0.1 | ALAS2023-2026-1540 | Apr 13, 2026 |
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