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CVE-2026-39976

HIGH

7.1

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.17.1

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

Vetor de ataqueNETWORK

ComplexidadeHIGH

Privilegios necessariosLOW

Interacao do usuarioNONE

Publicado4/9/2026

Ultima modificacao4/9/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-287

Referencias

https://github.com/laravel/passport/issues/1900(security-advisories@github.com)

https://github.com/laravel/passport/pull/1901(security-advisories@github.com)

https://github.com/laravel/passport/pull/1902(security-advisories@github.com)

https://github.com/laravel/passport/security/advisories/GHSA-349c-2h2f-mxf6(security-advisories@github.com)

https://github.com/thephpleague/oauth2-server/issues/1456#issuecomment-2734989996(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

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