7.4
High
CVE-2026-102273 PyJWT is a Python implementation of JSON Web Token standards
Description
PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, PyJWT HMACAlgorithm.prepare_key is affected because HMAC key guard only recognizes top-level public JWK forms and misses container representations. This occurs when an application allows HMAC and asymmetric algorithms and passes a public JWK container as the raw key. As a result, public asymmetric key material is accepted as the HMAC secret. Consequently, an attacker who knows the public key can forge a token with arbitrary authenticated claims. This issue is fixed in version 2.14.0.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| pyjwt 2.13 | 2.13.0 → < 2.14.0 | 2.14.0 |
References
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
Other CVEs of pyjwt
The 22 CVEs of pyjwt →
CVE-2026-103001
PyJWT is a Python implementation of JSON Web Token standards
6.5
Medium
CVE-2026-102265
PyJWT is a Python implementation of JSON Web Token standards
5.3
Medium
CVE-2026-102275
PyJWT is a Python implementation of JSON Web Token standards
6.5
Medium
CVE-2026-102274
PyJWT is a Python implementation of JSON Web Token standards
5.9
Medium