DEBIAN-CVE-2026-42011

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Source
https://security-tracker.debian.org/tracker/CVE-2026-42011
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42011.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-42011
Upstream
  • CVE-2026-42011
Published
2026-05-07T15:16:09.760Z
Modified
2026-06-15T19:06:23.555350319Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.

References

Affected packages

Debian:11 / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/debian/gnutls28?arch=source&distro=bullseye

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.1-5+deb11u10

Affected versions

3.*
3.7.1-5
3.7.1-5+deb11u1
3.7.1-5+deb11u2
3.7.1-5+deb11u3
3.7.1-5+deb11u4
3.7.1-5+deb11u5
3.7.1-5+deb11u6
3.7.1-5+deb11u7
3.7.1-5+deb11u8
3.7.1-5+deb11u9

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42011.json"

Debian:12 / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/debian/gnutls28?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.9-2+deb12u7

Affected versions

3.*
3.7.9-2
3.7.9-2+deb12u1
3.7.9-2+deb12u2
3.7.9-2+deb12u3
3.7.9-2+deb12u4
3.7.9-2+deb12u5
3.7.9-2+deb12u6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42011.json"

Debian:13 / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/debian/gnutls28?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.9-3+deb13u4

Affected versions

3.*
3.8.9-3
3.8.9-3+deb13u1
3.8.9-3+deb13u2
3.8.9-3+deb13u3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42011.json"

Debian:14 / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/debian/gnutls28?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.13-1

Affected versions

3.*
3.8.9-3
3.8.10-1
3.8.10-2
3.8.10-3
3.8.11-1
3.8.11-2
3.8.11-3
3.8.12-1
3.8.12-2
3.8.12-3
3.8.12-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42011.json"