# CVE-2026-50157

## Summary

- **CVE ID:** CVE-2026-50157
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** CWE-598
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 14, 2026

## Description

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.

## Affected Products

- auth0 — symfony (>= 5.0.0-BETA0, < 5.9.0)

## References

- [CNA](https://github.com/auth0/symfony/security/advisories/GHSA-ffq7-hh2j-r24p)
- [CNA](https://github.com/auth0/symfony/commit/bd1851b14ae15e99cbe87c96496cf25da025288a)
- [CNA](https://github.com/auth0/symfony/releases/tag/5.9.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.50%
- **EPSS Percentile:** 41.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._