PT-2025-54698 · Packagist · Auth0/Symfony

Published 2025-12-17 · Updated 2025-12-17

OSV

CVSS v3.1

6.8

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Description

In applications built with the Auth0-PHP SDK, the audience validation in access tokens is performed improperly. Without proper validation, affected applications may accept ID tokens as Access tokens.

Affected product and versions

Projects are affected if they meet the following preconditions:

• Applications using the Auth0 Symfony SDK with versions between 5.0.0 and 5.5.0
• Auth0 Symfony SDK uses the Auth0-PHP SDK with versions between 8.0.0 and 8.17.0.

Resolution

Upgrade Auth0/symfony to version 5.6.0 or greater.

Acknowledgement

Okta would like to thank Jafar Sadiq (iaf4r) for their discovery and responsible disclosure.

Fix

Insufficient Verification of Data Authenticity

Incorrect Authorization

Weakness Enumeration

CWE-345

CWE-863

CWE-1395

Related Identifiers

GHSA-F3R2-88MQ-9V4G

Affected Products

Auth0/Symfony

References · 5

• https://osv.dev/vulnerability/GHSA-f3r2-88mq-9v4g · Vendor Advisory
• https://github.com/auth0/symfony/releases/tag/5.6.0 · Note
• https://github.com/auth0/symfony/security/advisories/GHSA-f3r2-88mq-9v4g · Note
• https://github.com/auth0/symfony/commit/0103d6f8dcef6996653fad1f823d1c167f472479 · Note
• https://github.com/auth0/symfony · Note