Arbitrary file upload in Ilias
CVE-2026-85135
A security flaw has been discovered in ILIAS up to 9.21/10.9/11.2. This affects the function ilObjMediaObjectGUI::uploadMultipleSubtitleFileObject of the file Services/Repository/Service/Resources/ZipAdapter.php of the component MediaPool. The manipulation results in unrestricted upload. The attack may be launched remotely. Upgrading to version 9.22, 10.10 and 11.3 is able to mitigate this issue. The patch is identified as ef5d7f99fe1ea0381db04b333a2906548b3590e4/b0d61be43671b6bfe91baf469a5ee11e764f2e23. It is recommended to upgrade the affected component.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (28.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Ilias — versions 10.0, 10.1, 10.2
Weakness classification (CWE)
References
- github.com/ILIAS-eLearning/ILIAS/commit/b0d61be43671b6bfe91baf469a5ee11e764f2e23 (patch)
- github.com/ILIAS-eLearning/ILIAS/releases/tag/v11.3 (patch)
- vuldb.com/cve/CVE-2026-85135 (third-party-advisory)
- vuldb.com/submit/892842 (third-party-advisory)
- vuldb.com/vuln/398335 (technical-description, vdb-entry)
- vuldb.com/vuln/398335/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-85135?
- CVE-2026-85135 is a medium-severity vulnerability in Ilias, classified under Improper Access Control. CVSS score: 6.3/10. Published 2026-09-03.
- How severe is CVE-2026-85135?
- Medium severity. CVSS v3 base score is 6.3 out of 10.