PYSEC-2026-179
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/pyjwt/PYSEC-2026-179.yaml
- JSON Data
- https://api.test.osv.dev/v1/vulns/PYSEC-2026-179
- Aliases
- Published
- 2026-05-28T16:16:29.657Z
- Modified
- 2026-06-02T12:15:07.335480559Z
- 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
-
PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.
- References
Affected packages
PyPI / pyjwt
Package
- Name
- pyjwt
- View open source insights on deps.dev
- Purl
- pkg:pypi/pyjwt
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.13.0
Affected versions
0.*
0.1.1
0.1.2
0.1.3
0.1.4
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.2.0
0.2.1
0.2.3
0.3.0
0.3.1
0.3.2
0.4.0
0.4.1
0.4.2
0.4.3
1.*
1.0.0
1.0.1
1.1.0
1.3.0
1.4.0
1.4.1
1.4.2
1.5.0
1.5.1
1.5.2
1.5.3
1.6.0
1.6.1
1.6.3
1.6.4
1.7.0
1.7.1
2.*
2.0.0a1
2.0.0a2
2.0.0
2.0.1
2.1.0
2.2.0
2.3.0
2.4.0
2.5.0
2.6.0
2.7.0
2.8.0
2.9.0
2.10.0
2.10.1
2.11.0
2.12.0
2.12.1