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EUVD-2026-363591

2026-10-08T17:24:17.501425+00:00

EUVD-2026-363591

fkie_cve-2026-81892

2026-10-08T17:24:17.501456+00:00

EasyAdmin is a fast and modern admin generator for Symfony applications. From 4.0.0 until 4.29.16 and 5.5.1, EasyAdmin serves all backend requests through a single dashboard route and, for custom actions (Action::linkToRoute() and MenuItem::linkToRoute()), swaps the executed controller based on the routeName query parameter on the kernel.controller event. The swap happens after Symfony's security firewall has already evaluated access_control against the original dashboard URL, and the routeName value was not validated. As a result, a path-based access_control rule protecting the target route was never evaluated, so a low-privilege backend user who can reach a single EasyAdmin URL and knows a target route's name can execute that route's controller, bypassing the path-based rule. Only path-based protections are bypassed. Routes whose controller enforces its own authorization with #[IsGranted] or denyAccessUnlessGranted() remain protected because those checks are recomputed against the swapped-in controller. This issue is fixed in versions 4.29.16 and 5.5.1.

GHSA-g2fm-8hr4-j82h — EasyAdmin custom-action dispatcher bypasses access_control on other routes

2026-10-08T17:24:17.501493+00:00

Affected: Packagist: easycorp/easyadmin-bundle

## Summary

EasyAdmin serves all backend requests through a single dashboard route and, for custom actions (`Action::linkToRoute()` / `MenuItem::linkToRoute()`), swaps the executed controller based on the `routeName` query parameter on the `kernel.controller` event.

That swap happens **after** Symfony's security firewall has already evaluated `access_control` against the original dashboard URL, and the `routeName` value was not validated. As a result, a path-based `access_control` rule protecting the *target* route was never evaluated, so a low-privilege backend user could reach a more restricted route by name.

## Impact

Any application where `access_control` (or another path-based Symfony security rule) protects some routes more strictly than the dashboard URL used to reach EasyAdmin. An attacker who can reach a single EasyAdmin URL and knows a target route's **name** can execute that route's controller, bypassing the path-based rule.

Only **path-based** protections are bypassed. Routes whose controller enforces its own authorization with `#[IsGranted]` / `denyAccessUnlessGranted()` remain protected, because those checks are recomputed against the swapped-in controller.

## Patches

Fixed in **4.29.16** and **5.5.1**. Before dispatching a custom-action route, EasyAdmin now re-evaluates the target route's `access_control` rule and denies the request if the current user is not granted access.

## Workarounds

Add controller-level authorization (`#[IsGranted]` / `denyAcces…