PYSEC-2026-2116
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/authlib/PYSEC-2026-2116.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-2116
- Aliases
- Published
- 2026-03-16T18:16:07.557Z
- Modified
- 2026-07-13T07:15:14.229863781Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a cryptographic padding oracle vulnerability was identified in the Authlib Python library concerning the implementation of the JSON Web Encryption (JWE) RSA15 key management algorithm. Authlib registers RSA15 in its default algorithm registry without requiring explicit opt-in, and actively destroys the constant-time Bleichenbacher mitigation that the underlying cryptography library implements correctly. This issue has been patched in version 1.6.9.
- References
Affected packages
PyPI / authlib
Package
- Name
- authlib
- View open source insights on deps.dev
- Purl
- pkg:pypi/authlib
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.6.9
Affected versions
0.*
0.1rc0
0.1
0.2
0.2.1
0.3
0.4
0.4.1
0.5
0.5.1
0.6
0.7
0.8
0.9
0.10
0.11
0.12
0.12.1
0.13
0.14
0.14.1
0.14.2
0.14.3
0.15
0.15.1
0.15.2
0.15.3
0.15.4
0.15.5
0.15.6
1.*
1.0.0a1
1.0.0a2
1.0.0b1
1.0.0b2
1.0.0rc1
1.0.0
1.0.1
1.1.0
1.2.0
1.2.1
1.3.0
1.3.1
1.3.2
1.4.0
1.4.1
1.5.0
1.5.1
1.5.2
1.6.0
1.6.1
1.6.2
1.6.3
1.6.4
1.6.5
1.6.6
1.6.7
1.6.8