Description
ILIAS before 9.24, 10.12, and 11.5 contains an unrestricted file upload vulnerability in QTI question import image handling (ilQtiMatImageSecurity) that allows authenticated authors to write executable files. Attackers with question pool import rights can import a crafted archive writing a .htaccess and PHP file to the web-served image directory, achieving remote code execution as the web server user.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ILIAS-eLearning e.V. | ILIAS | 5.2.8 – < 9.24, 10.0 – < 10.12, 11.0 – < 11.5 | 9.24 |
Advisories 1
- WID-SEC-2026-3783 ILIAS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
References
- ILIAS 11.5 Security Advisory (Mantis 0048413) vendor-advisory
- ILIAS 10.12 Security Advisory (Mantis 0048413) vendor-advisory
- ILIAS 9.24 Security Advisory (Mantis 0048413) vendor-advisory
- QTI: Fix Matimage Filename And Content Bypass (release_9) patch
- QTI: Fix Matimage Filename And Content Bypass (release_10) patch
- QTI: Fix Matimage Filename And Content Bypass (release_11) patch
- ilQtiMatImageSecurity::validateLabel() at v10.11 technical-description
- https://github.com/ILIAS-eLearning/ILIAS product
- VulnCheck Advisory: ILIAS before 9.24, 10.12, and 11.5 Unrestricted File Upload via QTI Import third-party-advisory