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laravel/passport vulnerabilities

Vulnerabilities published for laravel/passport in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerability: 1

  1. CVE-2026-39976

    High · CVSS 7.1EPSS 0.29%Fix available

    Laravel Passport's TokenGuard Authenticates Unrelated User for Client Credentials Tokens

    Laravel Passport provides OAuth2 server support to Laravel. From 13.0.0 to before 13.7.1, there is an Authentication Bypass for client_credentials tokens. the league/oauth2-server library sets the JWT sub claim to the client identifier (since there's no user). The token guard then passes this value to retrieveById() without validating it's actually a user identifier, potentially resolving an unrelated real user. Any machine-to-machine token can inadvertently authenticate as an actual user. This vulnerability is fixed in 13.7.1.

    laravel/passportPHP
    • Update to 13.7.1
    Published Updated
    Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗

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