Auth0 Symfony SDK Accepted Bearer Tokens via URL Query Parameter
Description
Applications built with the Auth0 Symphony SDK, using the Authorizer security authenticator to protect HTTP routes may accept OAuth 2.0 bearer access tokens provided through a URL query parameter, in addition to the standard Authorization header, which may increase the risk of access token exposure and replay against protected API endpoints.
Resolution
Upgrade auth0/symfony to version 5.9.0 or greater.
Acknowledgement
Okta would like to thank Alex Yeara for their discovery.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | auth0/symfony | >= 5.0.0-BETA0, < 5.9.0 | 5.9.0 |
References
- https://github.com/auth0/symfony/security/advisories/GHSA-ffq7-hh2j-r24p
- https://github.com/auth0/symfony/commit/172d1d3e0b9d1e93610d786118389a811179bc8a
- https://github.com/auth0/symfony/commit/bd1851b14ae15e99cbe87c96496cf25da025288a
- https://github.com/auth0/symfony
- https://github.com/auth0/symfony/releases/tag/5.9.0
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-200, CWE-598- Platform
- Composer
- Package
auth0/symfony- Disclosed
- 14.07.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-ffq7-hh2j-r24p - CC BY 4.0
Vulnerability history: auth0/symfony
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 6
- First → latest
- 05.2025 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 1
- Medium 2
- Low 1
Disclosures per year
- 2025: 4
- 2026: 2
-
Auth0 Symfony SDK Accepted Bearer Tokens via URL Query Parameter this entry
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