4.8
Medium
CVE-2026-102269 PyJWT is a Python implementation of JSON Web Token standards
Description
PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT signature segment is affected because signature segment decoding accepts characters outside the canonical Base64URL representation. This occurs when non-Base64URL characters are appended to a valid compact JWS signature segment. As a result, base64url_decode produces the same signature bytes for different serialized segments. Consequently, raw-token revocation checks can fail to recognize an equivalent modified token. This issue is fixed in version 2.14.0.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| pyjwt 2.14 | earliest → < 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