---
id: CVE-2026-50157
title: Auth0 Symfony is a Symfony SDK for Auth0 Authentication and Management APIs
summary: >-
  Auth0 Symfony is a Symfony SDK for Auth0 Authentication and Management APIs.
  From 5.0.0-BETA0 until 5.9.0, the Authorizer::authenticate() and
  Authorizer::supports() paths in the Authorizer security authenticator may
  accept OAuth 2.0 bear…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-598
  - CWE-200
vendor: auth0
product: symfony
affected:
  - 'symfony >= 5.0.0-BETA0, < 5.9.0'
patched:
  - auth0/symfony 5.9.0
published: '2026-09-14'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:16:45.027'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-50157'
references:
  - url: >-
      https://github.com/auth0/symfony/commit/bd1851b14ae15e99cbe87c96496cf25da025288a
    label: security-advisories@github.com
  - url: 'https://github.com/auth0/symfony/releases/tag/5.9.0'
    label: security-advisories@github.com
  - url: 'https://github.com/auth0/symfony/security/advisories/GHSA-ffq7-hh2j-r24p'
    label: security-advisories@github.com
  - url: >-
      https://github.com/auth0/symfony/commit/172d1d3e0b9d1e93610d786118389a811179bc8a
  - url: 'https://github.com/advisories/GHSA-ffq7-hh2j-r24p'
tags:
  - nvd
  - cve.org
  - ghsa
  - composer
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T19:20:53.714296Z'
aliases:
  - GHSA-ffq7-hh2j-r24p
ecosystem: composer
ingestedAt: '2026-07-14T19:38:53.179Z'
epss: 0.00506
epssPercentile: 0.40568
---

## Overview

Auth0 Symfony is a Symfony SDK for Auth0 Authentication and Management APIs. From 5.0.0-BETA0 until 5.9.0, the Authorizer::authenticate() and Authorizer::supports() paths in the Authorizer security authenticator may accept OAuth 2.0 bearer access tokens from the token URL query parameter as well as the Authorization header for protected HTTP routes. Query-string tokens can be recorded in server logs, browser history, or referrer data and then replayed against protected API endpoints. This issue is fixed in version 5.9.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-50157)

Affected packages:

- `auth0/symfony >= 5.0.0-BETA0, <= 5.8.0`

Patched in:

- `auth0/symfony 5.9.0`

Source: https://github.com/advisories/GHSA-ffq7-hh2j-r24p