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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Jwt Auth Plugin | — | Update jwt-auth plugin to version 2.1.1, or a newer patched version | May 15, 2025 | Nov 11, 2022 |
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