CVE-2026-54087
HighCVSS 7.6Summary
In EasyAdmin from 5.0.0 until 5.0.13, FileField and ImageField can accept browser-executable uploads while templates/crud/field/file.html.twig links to stored files for inline same-origin rendering without a download attribute or Content-Disposition attachment header. When uploads are stored under the public web root, an attacker can upload HTML through FileField or SVG through ImageField, and JavaScript executes in an authenticated administrator's origin.
Risk Assessment
Can expose session or CSRF tokens and enable privilege escalation. The issue does not permit PHP or PHTML code execution because Symfony guessExtension does not produce those stored extensions.
Recommendation
Update EasyAdmin to version 5.0.13 (or later). Consider storing uploads outside the public web root and enforcing a Content-Disposition attachment header.
Other vulnerabilities in EasyAdmin
See all- CVE-2026-50894Critical
easyadmin v2.0.2.2 is vulnerable to Unrestricted Upload of File with Dangerous Type in the background management interface which allows authenticated remote attackers to execute arbitrary code and gain server privileges via a crafted file upload.
- CVE-2026-81892High
In EasyAdmin (an admin generator for Symfony) versions from 4.0.0 to 4.29.16 and 5.5.1, there is a vulnerability where path-based access control can be bypassed. This occurs because the controller swap happens after the firewall check, and the routeName parameter is not validated. A low-privilege user can execute another route's controller if they know its name, bypassing path-based protections. Routes that enforce their own authorization (e.g., via #[IsGranted]) remain protected. The issue is fixed in versions 4.29.16 and 5.5.1.
Original NVD description (English source)
EasyAdmin is a fast and modern admin generator for Symfony applications. From 5.0.0 until 5.0.13, FileField and ImageField can accept browser-executable uploads while templates/crud/field/file.html.twig links to stored files for inline same-origin rendering without a download attribute or Content-Disposition attachment header. When uploads are stored under the public web root, an attacker with access to an affected form can upload HTML through FileField or SVG through ImageField, and JavaScript executes in an authenticated administrator's origin when the file is opened from the backend. Exploitation requires a privilege gap between the uploader and viewer. The issue can expose session or CSRF tokens and enable privilege escalation, but does not permit PHP or PHTML code execution because Symfony guessExtension does not produce those stored extensions. This issue is fixed in version 5.0.13.