Auth0 Symfony: Bearer Token Accepted via URL Query Parameter in Auth0 Symfony SDK (CVE-2026-50157) | HOL Guard CVE

Medium severityCVE-2026-50157GHSA-FFQ7-HH2J-R24P

Auth0 Symfony: Bearer Token Accepted via URL Query Parameter in Auth0 Symfony SDK

Answer in brief

CVE-2026-50157 records a Medium severity vulnerability in Auth0 Symfony: Bearer Token Accepted via URL Query Parameter in Auth0 Symfony SDK. The current sources do not mark it as known exploited. The current feed maps auth0/symfony (composer), auth0/symfony (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 14, 2026Updated Sep 14, 2026Source checked Sep 14, 2026First seen by HOL Jul 15, 2026Material review Sep 14, 2026

Upstream Advisory

Key facts

Risk: Medium
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps auth0/symfony (composer), auth0/symfony (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
auth0/symfonycomposer	>=5.0.0-BETA0,<=5.8.0	5.9.0
auth0/symfonygeneric	>= 5.0.0-BETA0, < 5.9.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for auth0/symfony, auth0/symfony.
Review the reported fix. Update auth0/symfony to 5.9.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 15, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.