ALPINE-CVE-2026-3833

See a problem?
Please try reporting it to the source first.
Source
https://security.alpinelinux.org/vuln/CVE-2026-3833
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-3833.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-3833
Upstream
  • CVE-2026-3833
Published
2026-04-30T18:16:30.577Z
Modified
2026-05-11T15:31:04.173991Z
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 gnutls performs case-sensitive comparisons of nameConstraints labels, specifically for dNSName (DNS) or rfc822Name (email) constraints within excludedSubtrees or permittedSubtrees. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.

References

Affected packages

Alpine:v3.20 / gnutls

Package

Name
gnutls
Purl
pkg:apk/alpine/gnutls?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.13-r0

Affected versions

2.*
2.6.4-r0
2.6.5-r0
2.6.6-r0
2.8.1-r0
2.8.1-r1
2.8.3-r0
2.8.5-r0
2.8.5-r1
2.8.6-r0
2.8.6-r1
2.8.6-r2
2.8.6-r3
2.10.4-r0
2.10.5-r0
2.10.5-r1
2.10.5-r2
2.12.6.1-r0
2.12.7-r0
2.12.16-r0
3.*
3.0.17-r0
3.0.18-r0
3.0.19-r0
3.0.20-r0
3.0.21-r0
3.0.22-r0
3.1.0-r0
3.1.1-r0
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.5-r0
3.1.5-r1
3.1.6-r1
3.1.7-r1
3.1.8-r1
3.1.9-r0
3.1.10-r0
3.1.11-r0
3.2.1-r0
3.2.1-r1
3.2.2-r1
3.2.3-r0
3.2.4-r0
3.2.4-r1
3.2.5-r0
3.2.6-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0
3.2.10-r0
3.2.11-r0
3.2.12-r0
3.2.12.1-r0
3.3.1-r0
3.3.2-r0
3.3.4-r0
3.3.5-r0
3.3.6-r0
3.3.7-r0
3.3.7-r1
3.3.8-r0
3.3.9-r0
3.3.9-r1
3.3.10-r0
3.3.11-r0
3.3.12-r0
3.3.13-r0
3.3.14-r0
3.4.0-r0
3.4.1-r0
3.4.1-r1
3.4.2-r0
3.4.3-r0
3.4.4.1-r0
3.4.5-r0
3.4.6-r0
3.4.7-r0
3.4.8-r0
3.4.9-r0
3.4.10-r0
3.4.11-r0
3.4.13-r0
3.4.14-r0
3.4.14-r1
3.4.15-r0
3.4.16-r0
3.4.17-r0
3.5.8-r0
3.5.8-r1
3.5.9-r0
3.5.10-r0
3.5.11-r0
3.5.12-r0
3.5.13-r0
3.5.13-r1
3.5.15-r0
3.6.0-r0
3.6.1-r0
3.6.2-r0
3.6.4-r0
3.6.5-r0
3.6.6-r0
3.6.7-r0
3.6.8-r0
3.6.8-r1
3.6.9-r0
3.6.10-r0
3.6.11.1-r0
3.6.11.1-r1
3.6.12-r0
3.6.13-r0
3.6.13-r1
3.6.13-r2
3.6.14-r0
3.6.15-r0
3.6.15-r1
3.7.0-r0
3.7.1-r0
3.7.3-r0
3.7.4-r0
3.7.5-r0
3.7.6-r0
3.7.7-r0
3.7.7-r1
3.7.8-r0
3.7.8-r1
3.7.8-r2
3.8.0-r0
3.8.0-r1
3.8.0-r2
3.8.0-r3
3.8.0-r4
3.8.1-r0
3.8.3-r0
3.8.5-r0
3.8.12-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-3833.json"

Alpine:v3.21 / gnutls

Package

Name
gnutls
Purl
pkg:apk/alpine/gnutls?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.13-r0

Affected versions

2.*
2.6.4-r0
2.6.5-r0
2.6.6-r0
2.8.1-r0
2.8.1-r1
2.8.3-r0
2.8.5-r0
2.8.5-r1
2.8.6-r0
2.8.6-r1
2.8.6-r2
2.8.6-r3
2.10.4-r0
2.10.5-r0
2.10.5-r1
2.10.5-r2
2.12.6.1-r0
2.12.7-r0
2.12.16-r0
3.*
3.0.17-r0
3.0.18-r0
3.0.19-r0
3.0.20-r0
3.0.21-r0
3.0.22-r0
3.1.0-r0
3.1.1-r0
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.5-r0
3.1.5-r1
3.1.6-r1
3.1.7-r1
3.1.8-r1
3.1.9-r0
3.1.10-r0
3.1.11-r0
3.2.1-r0
3.2.1-r1
3.2.2-r1
3.2.3-r0
3.2.4-r0
3.2.4-r1
3.2.5-r0
3.2.6-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0
3.2.10-r0
3.2.11-r0
3.2.12-r0
3.2.12.1-r0
3.3.1-r0
3.3.2-r0
3.3.4-r0
3.3.5-r0
3.3.6-r0
3.3.7-r0
3.3.7-r1
3.3.8-r0
3.3.9-r0
3.3.9-r1
3.3.10-r0
3.3.11-r0
3.3.12-r0
3.3.13-r0
3.3.14-r0
3.4.0-r0
3.4.1-r0
3.4.1-r1
3.4.2-r0
3.4.3-r0
3.4.4.1-r0
3.4.5-r0
3.4.6-r0
3.4.7-r0
3.4.8-r0
3.4.9-r0
3.4.10-r0
3.4.11-r0
3.4.13-r0
3.4.14-r0
3.4.14-r1
3.4.15-r0
3.4.16-r0
3.4.17-r0
3.5.8-r0
3.5.8-r1
3.5.9-r0
3.5.10-r0
3.5.11-r0
3.5.12-r0
3.5.13-r0
3.5.13-r1
3.5.15-r0
3.6.0-r0
3.6.1-r0
3.6.2-r0
3.6.4-r0
3.6.5-r0
3.6.6-r0
3.6.7-r0
3.6.8-r0
3.6.8-r1
3.6.9-r0
3.6.10-r0
3.6.11.1-r0
3.6.11.1-r1
3.6.12-r0
3.6.13-r0
3.6.13-r1
3.6.13-r2
3.6.14-r0
3.6.15-r0
3.6.15-r1
3.7.0-r0
3.7.1-r0
3.7.3-r0
3.7.4-r0
3.7.5-r0
3.7.6-r0
3.7.7-r0
3.7.7-r1
3.7.8-r0
3.7.8-r1
3.7.8-r2
3.8.0-r0
3.8.0-r1
3.8.0-r2
3.8.0-r3
3.8.0-r4
3.8.1-r0
3.8.3-r0
3.8.5-r0
3.8.8-r0
3.8.12-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-3833.json"

Alpine:v3.22 / gnutls

Package

Name
gnutls
Purl
pkg:apk/alpine/gnutls?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.13-r0

Affected versions

2.*
2.6.4-r0
2.6.5-r0
2.6.6-r0
2.8.1-r0
2.8.1-r1
2.8.3-r0
2.8.5-r0
2.8.5-r1
2.8.6-r0
2.8.6-r1
2.8.6-r2
2.8.6-r3
2.10.4-r0
2.10.5-r0
2.10.5-r1
2.10.5-r2
2.12.6.1-r0
2.12.7-r0
2.12.16-r0
3.*
3.0.17-r0
3.0.18-r0
3.0.19-r0
3.0.20-r0
3.0.21-r0
3.0.22-r0
3.1.0-r0
3.1.1-r0
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.5-r0
3.1.5-r1
3.1.6-r1
3.1.7-r1
3.1.8-r1
3.1.9-r0
3.1.10-r0
3.1.11-r0
3.2.1-r0
3.2.1-r1
3.2.2-r1
3.2.3-r0
3.2.4-r0
3.2.4-r1
3.2.5-r0
3.2.6-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0
3.2.10-r0
3.2.11-r0
3.2.12-r0
3.2.12.1-r0
3.3.1-r0
3.3.2-r0
3.3.4-r0
3.3.5-r0
3.3.6-r0
3.3.7-r0
3.3.7-r1
3.3.8-r0
3.3.9-r0
3.3.9-r1
3.3.10-r0
3.3.11-r0
3.3.12-r0
3.3.13-r0
3.3.14-r0
3.4.0-r0
3.4.1-r0
3.4.1-r1
3.4.2-r0
3.4.3-r0
3.4.4.1-r0
3.4.5-r0
3.4.6-r0
3.4.7-r0
3.4.8-r0
3.4.9-r0
3.4.10-r0
3.4.11-r0
3.4.13-r0
3.4.14-r0
3.4.14-r1
3.4.15-r0
3.4.16-r0
3.4.17-r0
3.5.8-r0
3.5.8-r1
3.5.9-r0
3.5.10-r0
3.5.11-r0
3.5.12-r0
3.5.13-r0
3.5.13-r1
3.5.15-r0
3.6.0-r0
3.6.1-r0
3.6.2-r0
3.6.4-r0
3.6.5-r0
3.6.6-r0
3.6.7-r0
3.6.8-r0
3.6.8-r1
3.6.9-r0
3.6.10-r0
3.6.11.1-r0
3.6.11.1-r1
3.6.12-r0
3.6.13-r0
3.6.13-r1
3.6.13-r2
3.6.14-r0
3.6.15-r0
3.6.15-r1
3.7.0-r0
3.7.1-r0
3.7.3-r0
3.7.4-r0
3.7.5-r0
3.7.6-r0
3.7.7-r0
3.7.7-r1
3.7.8-r0
3.7.8-r1
3.7.8-r2
3.8.0-r0
3.8.0-r1
3.8.0-r2
3.8.0-r3
3.8.0-r4
3.8.1-r0
3.8.3-r0
3.8.5-r0
3.8.8-r0
3.8.12-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-3833.json"

Alpine:v3.23 / gnutls

Package

Name
gnutls
Purl
pkg:apk/alpine/gnutls?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.13-r0

Affected versions

2.*
2.6.4-r0
2.6.5-r0
2.6.6-r0
2.8.1-r0
2.8.1-r1
2.8.3-r0
2.8.5-r0
2.8.5-r1
2.8.6-r0
2.8.6-r1
2.8.6-r2
2.8.6-r3
2.10.4-r0
2.10.5-r0
2.10.5-r1
2.10.5-r2
2.12.6.1-r0
2.12.7-r0
2.12.16-r0
3.*
3.0.17-r0
3.0.18-r0
3.0.19-r0
3.0.20-r0
3.0.21-r0
3.0.22-r0
3.1.0-r0
3.1.1-r0
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.5-r0
3.1.5-r1
3.1.6-r1
3.1.7-r1
3.1.8-r1
3.1.9-r0
3.1.10-r0
3.1.11-r0
3.2.1-r0
3.2.1-r1
3.2.2-r1
3.2.3-r0
3.2.4-r0
3.2.4-r1
3.2.5-r0
3.2.6-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0
3.2.10-r0
3.2.11-r0
3.2.12-r0
3.2.12.1-r0
3.3.1-r0
3.3.2-r0
3.3.4-r0
3.3.5-r0
3.3.6-r0
3.3.7-r0
3.3.7-r1
3.3.8-r0
3.3.9-r0
3.3.9-r1
3.3.10-r0
3.3.11-r0
3.3.12-r0
3.3.13-r0
3.3.14-r0
3.4.0-r0
3.4.1-r0
3.4.1-r1
3.4.2-r0
3.4.3-r0
3.4.4.1-r0
3.4.5-r0
3.4.6-r0
3.4.7-r0
3.4.8-r0
3.4.9-r0
3.4.10-r0
3.4.11-r0
3.4.13-r0
3.4.14-r0
3.4.14-r1
3.4.15-r0
3.4.16-r0
3.4.17-r0
3.5.8-r0
3.5.8-r1
3.5.9-r0
3.5.10-r0
3.5.11-r0
3.5.12-r0
3.5.13-r0
3.5.13-r1
3.5.15-r0
3.6.0-r0
3.6.1-r0
3.6.2-r0
3.6.4-r0
3.6.5-r0
3.6.6-r0
3.6.7-r0
3.6.8-r0
3.6.8-r1
3.6.9-r0
3.6.10-r0
3.6.11.1-r0
3.6.11.1-r1
3.6.12-r0
3.6.13-r0
3.6.13-r1
3.6.13-r2
3.6.14-r0
3.6.15-r0
3.6.15-r1
3.7.0-r0
3.7.1-r0
3.7.3-r0
3.7.4-r0
3.7.5-r0
3.7.6-r0
3.7.7-r0
3.7.7-r1
3.7.8-r0
3.7.8-r1
3.7.8-r2
3.8.0-r0
3.8.0-r1
3.8.0-r2
3.8.0-r3
3.8.0-r4
3.8.1-r0
3.8.3-r0
3.8.5-r0
3.8.8-r0
3.8.10-r0
3.8.11-r0
3.8.12-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-3833.json"