Vulnerability GHSA-f9x3-7vq9-cph6

Critical
CRITICAL RISK
CVSS Score: 9.5
Score Range: 9.0–10.0
Critical severity vulnerabilities (CVSS 9.0–10.0). These represent the highest impact issues.
18 days ago
October 23, 2026 at 09:50 PM UTC
Laravel TokenGuard authentication bypass through non-string API credentials
4.0.0-BETA2 - 10.50.3 and 11.0.0 - 11.56.0 and 12.0.0 - 12.67.0 and 13.0.0 - 13.26.1
4.0.0-BETA2 - 10.50.3 and 11.0.0 - 11.56.0 and 12.0.0 - 12.67.0 and 13.0.0 - 13.26.1

Summary

Laravel TokenGuard authentication bypass through non-string API credentials

Details

Laravel's built-in TokenGuard, when configured with a standard token-based API guard, may be bypassed to authenticate as an arbitrary existing user without knowledge of their valid API token.

Under certain database configurations (MySQL/MariaDB) an attacker can submit a specially crafted, non-string credential value that is mishandled during the authentication lookup, causing the underlying query to match an unintended user record rather than failing authentication as expected.

Impact

An unauthenticated attacker may authenticate as another user without possessing that user's API token, leading to authentication bypass and account takeover on any route protected by the affected guard.

Impacted packages

Timeline

Published
18 days ago
October 23, 2026 at 09:50 PM UTC
Fixed (13.27.0)
2 months ago
August 25, 2026 at 02:16 PM UTC
Fixed (12.68.0)
2 months ago
August 25, 2026 at 02:18 PM UTC
Fixed (11.56.1)
2 months ago
August 25, 2026 at 02:29 PM UTC
Fixed (10.50.4)
14 days ago
October 27, 2026 at 02:09 PM UTC
Last Modified
9 hours ago
November 10, 2026 at 07:15 PM UTC