PT-2026-32308 · Packagist · Auth0/Symfony

Published 2026-04-03 · Updated 2026-04-03

OSV

CVSS v3.1

8.2

High

Base vector

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

Impact

In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies.

Am I Affected?

Consumers are affected if their application meets the following preconditions:

• It uses the Auth0 Symfony SDK, versions between 5.0.0 and 5.7.0
• Auth0 Symfony SDK using the Auth0-PHP SDK versions between 8.0.0 to 8.18.0.

Resolution

Upgrade Auth0/symfony-auth0 to version 5.8.0 or greater.

Fix

Weakness Enumeration

CWE-331

Related Identifiers

GHSA-GHC5-95C2-VWCV

Affected Products

Auth0/Symfony

References · 3

• https://osv.dev/vulnerability/GHSA-ghc5-95c2-vwcv · Vendor Advisory
• https://github.com/auth0/symfony · Note
• https://github.com/auth0/symfony/security/advisories/GHSA-ghc5-95c2-vwcv · Note