DEBIAN-CVE-2026-28755
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.
DEBIAN-CVE-2026-28755
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-28755
nginx
Source reference: /affected/0/package/name
- Affected versions
- 1.26.3-3
Source reference:
/affected/0/versions1.28.0-1Source reference:
/affected/0/versions1.28.0-2Source reference:
/affected/0/versions1.28.0-3Source reference:
/affected/0/versions1.28.0-4Source reference:
/affected/0/versions1.28.0-5Source reference:
/affected/0/versions1.28.0-6Source reference:
/affected/0/versions1.28.1-1Source reference:
/affected/0/versions1.28.1-2Source reference:
/affected/0/versions1.28.1-3Source reference:
/affected/0/versions1.28.2-1Source reference:
/affected/0/versions1.28.2-2Source reference:
/affected/0/versions1.28.2-3Source reference:
/affected/0/versions1.28.2-4Source reference:
/affected/0/versions1.28.3-1Source reference:
/affected/0/versions - Fixed versions
- 1.28.3-2
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.28.3-2"
}
]
}
],
"package": {
"name": "nginx",
"purl": "pkg:deb/debian/nginx?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.26.3-3",
"1.28.0-1",
"1.28.0-2",
"1.28.0-3",
"1.28.0-4",
"1.28.0-5",
"1.28.0-6",
"1.28.1-1",
"1.28.1-2",
"1.28.1-3",
"1.28.2-1",
"1.28.2-2",
"1.28.2-3",
"1.28.2-4",
"1.28.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28755.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56691 · Revision 1
- Added to Heist Feed
- Publisher date