Symfony's OidcTokenHandler Accepts JWTs Missing aud/iss/exp Claims
Description
OidcTokenHandler is Symfony's built-in access-token handler for OpenID Connect: it validates a bearer JWT and returns the authenticated user identity. It delegates claim validation to the web-token/jwt-checker library's ClaimCheckerManager.
OidcTokenHandler::verifyClaims() registers audience (aud), issuer (iss), and expiry (exp) checkers, but never passes the $mandatoryClaims argument to ClaimCheckerManager::check(). That method only validates claims that are present in the token: a checker for an absent claim is silently skipped. A validly-signed JWT that simply omits aud, iss, and exp therefore passes verification.
Resolution
The OidcTokenHandler now calls the ClaimCheckerManager with the list of mandatory claims so that tokens missing aud, iss, or exp are rejected.
The patch for this issue is available here for branch 6.4.
Credits
Symfony would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | symfony/security-http | >= 6.3.0, < 6.4.40, >= 7.4.0, < 7.4.12, >= 8.0.0, < 8.0.12 | 6.4.40, 7.4.12, 8.0.12 |
| Paquete de Composer | symfony/symfony | >= 6.3.0, < 6.4.40, >= 7.4.0, < 7.4.12, >= 8.0.0, < 8.0.12 | 6.4.40, 7.4.12, 8.0.12 |
Referencias
- https://github.com/symfony/symfony/security/advisories/GHSA-29fc-p6c4-24cg
- https://github.com/symfony/symfony/commit/6b717aaac21b7e96798448d14c4355ea87690b3d
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2026-45069.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45069.yaml
- https://github.com/symfony/symfony
- https://symfony.com/cve-2026-45069
- Vector CVSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U- Debilidad (CWE)
CWE-1287, CWE-345- Plataforma
- Composer
- Paquete
symfony/security-http, symfony/symfony- Publicada
- 27.05.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-29fc-p6c4-24cg - CC BY 4.0
Historial de vulnerabilidades: symfony/security-http
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- Entradas en total
- 20
- Primera → última
- 12.2019 06.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 10
- Media 8
- Baja 2
Divulgaciones por año
- 2019: 1
- 2020: 2
- 2021: 3
- 2022: 7
- 2023: 1
- 2024: 1
- 2025: 0
- 2026: 5
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