Vulnerability · Published Aug 31, 2026 · Assigned by GitHub_M
CVE-2026-81892EasyAdmin custom-action dispatcher bypasses access_control on other routes
High 8.1
In plain English
A high-severity authorization bypass via user-controlled key in EasyAdminBundle from EasyCorp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | easycorp/easyadmin-bundle | 4.29.16 | GHSA-g2fm-8hr4-j82h |
| Packagist | easycorp/easyadmin-bundle | 5.5.1 | GHSA-g2fm-8hr4-j82h |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| EasyCorp | EasyAdminBundle | >= 4.0.0, < 4.29.16>= 5.0.0, < 5.5.1 |
Weakness: CWE-639, CWE-862, CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- https://github.com/EasyCorp/EasyAdminBundle/security/advisories/GHSA-g2fm-8hr4-j82h x_refsource_CONFIRM
- https://github.com/EasyCorp/EasyAdminBundle/commit/03be45c6b7213c4c984a1d0542b7ec60359329f8 x_refsource_MISC
- https://github.com/EasyCorp/EasyAdminBundle/commit/6228dfef598d81eeb0baa35625e50812f3c77699 x_refsource_MISC
- https://github.com/EasyCorp/EasyAdminBundle/releases/tag/v4.29.16 x_refsource_MISC
- https://github.com/EasyCorp/EasyAdminBundle/releases/tag/v5.5.1 x_refsource_MISC