PYSEC-2026-35

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/cryptography/PYSEC-2026-35.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-35
Aliases
Published
2026-03-31T03:15:59.123Z
Modified
2026-05-20T09:18:55.884138Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
[none]
Details

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6.

References

Affected packages

PyPI / cryptography

Package

Name
cryptography
View open source insights on deps.dev
Purl
pkg:pypi/cryptography

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
46.0.6

Affected versions

0.*
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.*
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.*
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.*
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.*
35.0.0
36.*
36.0.0
36.0.1
36.0.2
37.*
37.0.0
37.0.1
37.0.2
37.0.3
37.0.4
38.*
38.0.0
38.0.1
38.0.2
38.0.3
38.0.4
39.*
39.0.0
39.0.1
39.0.2
40.*
40.0.0
40.0.1
40.0.2
41.*
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.*
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.*
43.0.0
43.0.1
43.0.3
44.*
44.0.0
44.0.1
44.0.2
44.0.3
45.*
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.*
46.0.0
46.0.1
46.0.2
46.0.3
46.0.4
46.0.5

Database specific

source 
"https://github.com/pypa/advisory-database/blob/main/vulns/cryptography/PYSEC-2026-35.yaml"