ALPINE-CVE-2026-42012
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could cause the certificate validation process to incorrectly fall back to checking DNS hostnames against the Common Name (CN), potentially allowing the attacker to spoof legitimate services or intercept sensitive information.
ALPINE-CVE-2026-42012
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:ALPINE-CVE-2026-42012
gnutls
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.8.13-r0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
gnutls
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.8.13-r0
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
gnutls
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.8.13-r0
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
gnutls
Source reference: /affected/3/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.8.13-r0
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
gnutls
Source reference: /affected/4/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.8.13-r0
Source reference:
/affected/4/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": "3.8.13-r0"
}
]
}
],
"package": {
"name": "gnutls",
"purl": "pkg:apk/alpine/gnutls?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-42012.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.8.13-r0"
}
]
}
],
"package": {
"name": "gnutls",
"purl": "pkg:apk/alpine/gnutls?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-42012.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.8.13-r0"
}
]
}
],
"package": {
"name": "gnutls",
"purl": "pkg:apk/alpine/gnutls?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-42012.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.8.13-r0"
}
]
}
],
"package": {
"name": "gnutls",
"purl": "pkg:apk/alpine/gnutls?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-42012.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.8.13-r0"
}
]
}
],
"package": {
"name": "gnutls",
"purl": "pkg:apk/alpine/gnutls?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-42012.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #54370 · Revision 1
- Added to Heist Feed
- Publisher date