CVE-2026-69248
CVE-2026-69248 · python-cryptography verifier accepts wildcard DNS names allowing escape from permittedSubtrees
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cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 45.0.0 through 48.0.0, if an intermediate constrained CA permits the DNS name foo.example.com, and the leaf certificate has a wildcard in its DNS SAN of *.example.com, python-cryptography's verifier accepts which allows escaping outside of the permitted names. The core issue is in DNSConstraint::matches, where a wildcard pattern was treated as matching a more-specific permitted constraint even though *.example.com can expand to sibling names such as bar.example.com outside foo.example.com. This allows acceptance of an invalid certificate chain. This issue is fixed in 49.0.0.
CVSS 6.9 · Mittel · EPSS 0,2% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: system · python
Betroffene Produkte und Versionen
cryptography
- Softwareversionen
- < 49.0.0: Betroffen
Keine Korrektur veröffentlicht
python-cryptography Debian:12
- Softwareversionen
- 38.0.4-3
- 38.0.4-3+deb12u1
- 38.0.4-4
- 41.0.7-1
- 41.0.7-2
- 41.0.7-3
- 41.0.7-4
- 41.0.7-5
- 42.0.5-1
- 42.0.5-2
- 43.0.0-1
- 43.0.0-2
- 43.0.0-3
- 44.0.2-1
- 44.0.2-2
- 45.0.6-1
- 45.0.6-1~exp1
- 45.0.7-1
- 46.0.1-1
- 46.0.1-1~exp1
- 46.0.5-1
- 46.0.5-2
- 46.0.6-1
- 46.0.7-1
- 47.0.0-1
- 49.0.0-1
- 49.0.0-1~exp1
- 49.0.0-2
- 50.0.2-1~exp1
- Betroffene Versionsbereiche
- ECOSYSTEM: (−∞, +∞)
Keine Korrektur veröffentlicht
python-cryptography Debian:13
- Softwareversionen
- 43.0.0-3
- 43.0.0-3+deb13u1
- 44.0.2-1
- 44.0.2-2
- 45.0.6-1
- 45.0.6-1~exp1
- 45.0.7-1
- 46.0.1-1
- 46.0.1-1~exp1
- 46.0.5-1
- 46.0.5-2
- 46.0.6-1
- 46.0.7-1
- 47.0.0-1
- 49.0.0-1
- 49.0.0-1~exp1
- 49.0.0-2
- 50.0.2-1~exp1
- Betroffene Versionsbereiche
- ECOSYSTEM: (−∞, +∞)
Keine Korrektur veröffentlicht
python-cryptography Debian:14
- Softwareversionen
- 43.0.0-3
- 44.0.2-1
- 44.0.2-2
- 45.0.6-1
- 45.0.6-1~exp1
- 45.0.7-1
- 46.0.1-1
- 46.0.1-1~exp1
- 46.0.5-1
- 46.0.5-2
- 46.0.6-1
- 46.0.7-1
- 47.0.0-1
- 49.0.0-1~exp1
- Betroffene Versionsbereiche
- ECOSYSTEM: < 49.0.0-1
Auf 49.0.0-1 aktualisieren
cryptography PyPI
- Softwareversionen
- 45.0.0
- 45.0.1
- 45.0.2
- 45.0.3
- 45.0.4
- 45.0.5
- 45.0.6
- 45.0.7
- 46.0.0
- 46.0.1
- 46.0.2
- 46.0.3
- 46.0.4
- 46.0.5
- 46.0.6
- 46.0.7
- 47.0.0
- 48.0.0
- 48.0.1
- Betroffene Versionsbereiche
- ECOSYSTEM: ≥ 45.0.0, < 49.0.0
Auf 49.0.0 aktualisieren
cryptography PyPI
- Softwareversionen
- 0.1
- 0.2
- 0.2.1
- 0.2.2
- 0.3
- 0.4
- 0.5
- 0.5.1
- 0.5.2
- 0.5.3
- 0.5.4
- 0.6
- 0.6.1
- 0.7
- 0.7.1
- 0.7.2
- 0.8
- 0.8.1
- 0.8.2
- 0.9
- 0.9.1
- 0.9.2
- 0.9.3
- 1.0
- 1.0.1
- 1.0.2
- 1.1
- 1.1.1
- 1.1.2
- 1.2
- 1.2.1
- 1.2.2
- 1.2.3
- 1.3
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.4
- 1.5
- 1.5.1
- 1.5.2
- 1.5.3
- 1.6
- 1.7
- 1.7.1
- 1.7.2
- 1.8
- 1.8.1
- 1.8.2
- 1.9
- 2.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.1
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.2
- 2.2.1
- 2.2.2
- 2.3
- 2.3.1
- 2.4
- 2.4.1
- 2.4.2
- 2.5
- 2.6
- 2.6.1
- 2.7
- 2.8
- 2.9
- 2.9.1
- 2.9.2
- 3.0
- 3.1
- 3.1.1
- 3.2
- 3.2.1
- 3.3
- 3.3.1
- 3.3.2
- 3.4
- 3.4.1
- 3.4.2
- 3.4.3
- 3.4.4
- 3.4.5
- 3.4.6
- 3.4.7
- 3.4.8
- 35.0.0
- 36.0.0
- 36.0.1
- 36.0.2
- 37.0.0
- 37.0.1
- 37.0.2
- 37.0.3
- 37.0.4
- 38.0.0
- 38.0.1
- 38.0.2
- 38.0.3
- 38.0.4
- 39.0.0
- 39.0.1
- 39.0.2
- 40.0.0
- 40.0.1
- 40.0.2
- 41.0.0
- 41.0.1
- 41.0.2
- 41.0.3
- 41.0.4
- 41.0.5
- 41.0.6
- 41.0.7
- 42.0.0
- 42.0.1
- 42.0.2
- 42.0.3
- 42.0.4
- 42.0.5
- 42.0.6
- 42.0.7
- 42.0.8
- 43.0.0
- 43.0.1
- 43.0.3
- 44.0.0
- 44.0.1
- 44.0.2
- 44.0.3
- 45.0.0
- 45.0.1
- 45.0.2
- 45.0.3
- 45.0.4
- 45.0.5
- 45.0.6
- 45.0.7
- 46.0.0
- 46.0.1
- 46.0.2
- 46.0.3
- 46.0.4
- 46.0.5
- 46.0.6
- 46.0.7
- 47.0.0
- 48.0.0
- 48.0.1
- Betroffene Versionsbereiche
- ECOSYSTEM: < 49.0.0
Auf 49.0.0 aktualisieren
python-cryptography Ubuntu:26.04:LTS
- Softwareversionen
- 43.0.0-1ubuntu1
- 46.0.1-1ubuntu2
- 46.0.5-1ubuntu1
- 46.0.5-1ubuntu2
- Betroffene Versionsbereiche
- ECOSYSTEM: < 46.0.5-1ubuntu2.2
Auf 46.0.5-1ubuntu2.2 aktualisieren