CVE-2026-86416
Medium
Description
ILIAS versions before 9.23, 10.11, and 11.4 contain an authorization bypass vulnerability in ilObjGroupGUI where saveMapSettingsObject() and updateGroupTypeObject() perform state-changing operations without write permission checks. Authenticated users with only read access to a group can craft POST requests to modify group map settings and didactic template assignments, changing group modes and permissions for all members.
SeverityMedium
CVSS5.4
Exploit probability—
Product
ILIAS
PublishedSep 7, 2026
First seenSep 7, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- ILIAS-eLearning e.V. ILIAS9.23, 10.11, 11.4 or later
Vendor advisories
- docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=942
- docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=941
- docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=940
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ILIAS-eLearning e.V. ILIAS | 9.0 ≤ v < 9.23, 10.0 ≤ v < 10.11, 11.0 ≤ v < 11.4 | 9.23, 10.11, 11.4 |
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