CVE-2026-50157
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductAuth0/symfony
PublishedSep 14, 2026
First seenSep 14, 2026
Weakness typeCWE-598CWE-598
How to fix
Update
- auth0/symfony5.9.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| auth0/symfonyPackagist | 5.0.0-BETA0 ≤ v < 5.9.0 | 5.9.0 |
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