EasyAdmin custom-action dispatcher bypasses access_control on other routes

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-81892
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-31 21:17:52 UTC
Updated2026-08-31 21:17:52 UTC
DescriptionEasyAdmin 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Problem Types: CWE-639 | CWE-862 | CWE-863 | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key | CWE-862 CWE-862: Missing Authorization | CWE-863 CWE-863: Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA EasyCorp EasyAdminBundle affected >= 4.0.0, < 4.29.16 Not specified
CNA EasyCorp EasyAdminBundle affected >= 5.0.0, < 5.5.1 Not specified

References

ReferenceSourceLinkTags
github.com/EasyCorp/EasyAdminBundle/commit/03be45c6b7213c4c984a1d0542b7e... [email protected] github.com
github.com/EasyCorp/EasyAdminBundle/releases/tag/v5.5.1 [email protected] github.com
github.com/EasyCorp/EasyAdminBundle/releases/tag/v4.29.16 [email protected] github.com
github.com/EasyCorp/EasyAdminBundle/security/advisories/GHSA-g2fm-8hr4-j82h [email protected] github.com
github.com/EasyCorp/EasyAdminBundle/commit/6228dfef598d81eeb0baa35625e50... [email protected] github.com
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