Description
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.
INFO
Published Date :
2026-04-09T16:50:42.326Z
Last Modified :
2026-04-09T19:31:53.801Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-39976 vulnerability.
| Vendors | Products |
|---|---|
| Laravel |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-39976.
