CVE-2026-82396
Sulu is an open-source PHP content management system based on the Symfony framework.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | sulu/sulu | <= 2.6.24 | 2.6.25 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-pp4x-ccxq-6r33
- https://github.com/sulu/sulu/security/advisories/GHSA-pp4x-ccxq-6r33
- https://nvd.nist.gov/vuln/detail/CVE-2026-82396
- 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