CVE-2026-86416
ILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action Methods
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 7, 2026
- Updated
- Sep 18, 2026
- Reserved
- Sep 7, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
ILIASILIAS-eLearning e.V. |
|
References
- ILIAS 11.4 Security Advisory (Mantis 0048260)vendor-advisory
- ILIAS 10.11 Security Advisory (Mantis 0048260)vendor-advisory
- ILIAS 9.23 Security Advisory (Mantis 0048260)vendor-advisory
- Group: add missing permission checks in GUI (48260)patch
- ilObjGroupGUI::updateGroupTypeObject() at v11.3technical-description
- ilObjGroupGUI::saveMapSettingsObject() at v11.3technical-description
- https://github.com/ILIAS-eLearning/ILIASproduct
- VulnCheck Advisory: ILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action Methodsthird-party-advisory
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