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Firebase PHP-JWT < 6.0.0 - Algorithm Confusion
| CVE | CVE-2021-46743 |
|---|---|
| CVSS | 9.1 (Critical) |
| Publicly Published | November 11, 2022 |
| Last Updated | January 22, 2024 |
Description
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. This may or may not be exploitable in WordPress plugins and themes using the library.
References
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Vulnerability Details for JWT Auth – WordPress JSON Web Token Authentication
| Software Type | Plugin |
|---|---|
| Software Slug | jwt-auth (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 2.1.1, or a newer patched version |
| Affected Version |
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| Patched Version |
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