Dashboard / CVE-2026-39976

CVE-2026-39976

HIGH
MEDIUM Priority: 0.02 BB Relevance: 54/100
Published: 2026-04-09 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Interaction Conf. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: Changed
C: High
I: Low
A: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
laravel passport 13.0.0 – 13.7.1

References & Advisories (5)

Bug Bounty Relevance

54 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

7.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS — Exploitation Probability

0.29%
Raw Score 0.002890
Percentile 21.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00289
2026-10-28
0.00289

Intelligence Sources

nvd ref →

External Links