CVE-2021-46743
In Firebase PHP-JWT before 6.0.0, an algorithm-confusion issue (e.g., RS256 / HS256) exists via the kid (aka Key ID) header, when multiple types of keys are loaded in a key ring. This allows an attacker to forge tokens that validate under the incorrect key. NOTE: this provides a straightforward way to use the PHP-JWT library unsafely, but might not be considered a vulnerability in the library itself.
- Score
- CVSS 3.1 9.1 Critical
- Status
- Modified - cve@mitre.org
- Published
- 2022-03-29
- Last modified
- 2024-08-04
- Weaknesses
- CWE-843
Affected products
References
- https://github.com/firebase/php-jwt/issues/351
