CVE-2026-82396
Medium · CVSS 5.4Published 2026-08-31
CVSS
5.4
Medium
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is 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 Score Explained
CVSS 5.4 is Medium severity. Exploitation usually requires some specific conditions (local access, user interaction, or a particular config). Still worth patching in your next maintenance window.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://github.com/sulu/sulu/commit/d061094f5b7bb1d5e974544fce30bede9c7adf8e
- PATCHhttps://github.com/sulu/sulu/releases/tag/2.6.25
- PATCHhttps://github.com/sulu/sulu/releases/tag/3.0.8
- ›https://github.com/sulu/sulu/security/advisories/GHSA-pp4x-ccxq-6r33
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