# firebase/php-jwt (Packagist) vulnerabilities

2 known vulnerabilities (1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://packagist.org/packages/firebase/php-jwt

## Advisories (2)

### [CVE-2025-45769](https://cve.now/CVE-2025-45769): php-jwt v6.11.0 was discovered to contain weak encryption.

- Severity: Medium 6.5
- Published: Jul 31, 2025
- Affected: fixed in 7.0.0.

### [CVE-2021-46743](https://cve.now/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…

- Severity: Unrated
- Published: Mar 29, 2022
- Affected: fixed in 6.0.0.

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