CVE-2026-108113: File Upload RCE (CVSS 8.8)

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.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0064

Probability of exploitation

0.50%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-434 Unrestricted Upload

References

Other References

https://docu.ilias.de/go/blog/15821/950 https://docu.ilias.de/go/blog/15821/951 https://docu.ilias.de/go/blog/15821/952 https://github.com/ILIAS-eLearning/ILIAS https://github.com/ILIAS-eLearning/ILIAS/blob/v10.11/components/ILIAS/QTI/classes/class.ilQtiMatImageSecurity.php#L110-L122 https://github.com/ILIAS-eLearning/ILIAS/commit/47c8462bf46bbebd543a9f3b39c7896b0e9e7362 https://github.com/ILIAS-eLearning/ILIAS/commit/58ee5b1767212530f9948adb0e7d5aecec66ce60 https://github.com/ILIAS-eLearning/ILIAS/commit/5b200351330bee698432a45c0877c5bc694c367a https://www.vulncheck.com/advisories/ilias-before-9.24-10.12-and-11.5-unrestricted-file-upload-via-qti-import

Frequently Asked Questions

What is CVE-2026-108113? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-108113? +

CVE-2026-108113 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0064, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-108113? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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