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CVE-2026-54087 is a stored cross-site scripting vulnerability in EasyCorp EasyAdmin Bundle affecting FileField and ImageField handling of uploaded content. The issue arises when an attacker can upload browser-executable content such as HTML or SVG files that are then stored under the public web root and served inline by the application. When another user later opens the uploaded file from the administrative backend, the browser executes attacker-controlled JavaScript in the security context of the authenticated EasyAdmin session. The vulnerability is persistent because the malicious payload is stored on the server and triggered when viewed by a victim through the application workflow.
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