EasyAdmin: Stored Cross-Site Scripting (XSS) via uploaded files served inline in FileField and ImageField (CVE-2026-54087) | HOL Guard CVE

High severityCVE-2026-54087GHSA-8559-GWJ3-Q37R

EasyAdmin: Stored Cross-Site Scripting (XSS) via uploaded files served inline in FileField and ImageField

Answer in brief

CVE-2026-54087 records a High severity vulnerability in EasyAdmin: Stored Cross-Site Scripting (XSS) via uploaded files served inline in FileField and ImageField. The current sources do not mark it as known exploited. The current feed maps easycorp/easyadmin-bundle (composer), EasyCorp/EasyAdminBundle (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 14, 2026Updated Sep 14, 2026Source checked Sep 17, 2026First seen by HOL Jul 15, 2026Material review Sep 14, 2026

Upstream Advisory

Key facts

Risk: High
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps easycorp/easyadmin-bundle (composer), EasyCorp/EasyAdminBundle (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
easycorp/easyadmin-bundlecomposer	>=5.0.0,<5.0.13	5.0.13
EasyCorp/EasyAdminBundlegeneric	>= 5.0.0, < 5.0.13	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for easycorp/easyadmin-bundle, EasyCorp/EasyAdminBundle.
Review the reported fix. Update easycorp/easyadmin-bundle to 5.0.13 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 15, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.