CVE-2026-82396

Sulu is an open-source PHP content management system based on the Symfony framework. Prior to versions 2.6.25 and 3.0.8, src/Sulu/Bundle/MediaBundle/Controller/MediaStreamController.php allows the /media/{id}/download/{slug} route and its administration variant to honor the inline query parameter for scriptable MIME types. The vulnerable stored Content-Type values include text/html, application/xhtml+xml, text/xml, and application/xml. An attacker with media upload permission can store an HTML, XHTML, or XML document and create a link using inline=1, causing the application to return the file on the Sulu origin instead of forcing Content-Disposition attachment. When an authenticated victim opens the link, attacker-controlled JavaScript can execute with the victim's Sulu-origin session and can read data or perform actions as that victim. This issue is fixed in versions 2.6.25 and 3.0.8.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/sulu/sulu/commit/d061094f5b7bb1d5e974544fce30bede9c7adf8e
https://github.com/sulu/sulu/releases/tag/2.6.25
https://github.com/sulu/sulu/releases/tag/3.0.8
https://github.com/sulu/sulu/security/advisories/GHSA-pp4x-ccxq-6r33

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-31 22:17

Updated : 2026-09-08 21:11

NVD link : CVE-2026-82396

Mitre link : CVE-2026-82396

CVE.ORG link : CVE-2026-82396

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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