CVE catalog

CVE-2026-28755

Severity: Medium · CVSS 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Published: Mar 24, 2026, 2:13:26 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.14% · Oct 25, 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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	nginx	sid	`1.30.6-2`	fixed
Debian	nginx	forky	`1.30.6-2`	fixed
Debian	nginx	trixie	`1.26.3-3+deb13u7`	not affected
Debian	nginx	trixie-security	`1.26.3-3+deb13u10`	not affected
Debian	nginx	bookworm	`1.22.1-9+deb12u9`	not affected
Debian	nginx	bookworm-security	`1.22.1-9+deb12u10`	not affected
Cpe	nginx	Not reported	Not reported	not affected
Alpine	nginx	3.22	`1.28.3-r0`	fixed
Alpine	nginx	3.23	`1.28.3-r0`	fixed
Alpine	nginx	3.24	`1.28.3-r0`	fixed
Ubuntu	nginx	24.04	`1.24.0-1ubuntu1`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu1`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu2`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu3`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu4`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu6`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu7`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu7.1`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu7.3`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu7.4`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu7.5`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu7.6`	vulnerable
Ubuntu	nginx	24.04	`1.24.0-2ubuntu7.7`	fixed
Ubuntu	nginx	25.10	`1.26.3-2ubuntu1`	vulnerable
Ubuntu	nginx	25.10	`1.26.3-3ubuntu1`	vulnerable
Ubuntu	nginx	25.10	`1.26.3-3ubuntu2`	vulnerable
Ubuntu	nginx	25.10	`1.26.3-3ubuntu3`	vulnerable
Ubuntu	nginx	25.10	`1.28.0-3ubuntu1`	vulnerable
Ubuntu	nginx	25.10	`1.28.0-4ubuntu1`	vulnerable
Ubuntu	nginx	25.10	`1.28.0-6ubuntu1`	vulnerable
Ubuntu	nginx	25.10	`1.28.0-6ubuntu1.1`	vulnerable
Ubuntu	nginx	25.10	`1.28.0-6ubuntu1.2`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	nginx	source	sid	`1.28.3-2`	not yet assigned	Not reported	Not reported
Debian	nginx	source	forky	`1.28.3-2`	not yet assigned	Not reported	Not reported
Debian	nginx	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	nginx	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Alpine	nginx	apk	3.22	`1.28.3-r0`	Not reported	ALPINE-CVE-2026-28755	Not reported
Alpine	nginx	apk	3.23	`1.28.3-r0`	Not reported	ALPINE-CVE-2026-28755	Not reported
Alpine	nginx	apk	3.24	`1.28.3-r0`	Not reported	ALPINE-CVE-2026-28755	Not reported
Ubuntu	nginx	deb	24.04	`1.24.0-2ubuntu7.7`	Not reported	UBUNTU-CVE-2026-28755	Not reported
Ubuntu	nginx	deb	25.10	`1.28.0-6ubuntu1.2`	Not reported	UBUNTU-CVE-2026-28755	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libnginx-mod-http-geoip]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[libnginx-mod-http-image-filter]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[libnginx-mod-http-perl]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[libnginx-mod-http-xslt-filter]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[libnginx-mod-mail]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[libnginx-mod-stream]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[libnginx-mod-stream-geoip]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[nginx]Not affected
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[nginx-common]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[nginx-core]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[nginx-dev]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[nginx-doc]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[nginx-extras]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · amd64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · amd64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · arm64 · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[nginx-full]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
[nginx-light]Not affected
Source package: [nginx]
Details (4)
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm
- 1.22.1-9+deb12u9 · all · bookworm-security
  Not affected
  nvd · nginx · debian · bookworm

Observed: Oct 27, 2026, 8:03:25 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]