ILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action Methods
Summary
| CVE | CVE-2026-86416 |
|---|---|
| State | PUBLISHED |
| Assigner | VulnCheck |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-07 13:20:40 UTC |
| Updated | 2026-09-18 18:17:18 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 5.3 MEDIUM from [email protected]
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.002530000 probability, percentile 0.171400000 (date 2026-09-20)
Problem Types: CWE-862 | CWE-862 Missing Authorization
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 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/E:X/C... |
| 4.0 | CNA | CVSS | 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 |
| 3.1 | [email protected] | Secondary | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
| 3.1 | CNA | CVSS | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
LowUser Interaction
NoneConfidentiality
NoneIntegrity
LowAvailability
LowSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
LowAvailability
LowCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | ILIAS-eLearning E.V. | ILIAS | affected 9.0 9.23 custom | Not specified |
| CNA | ILIAS-eLearning E.V. | ILIAS | affected 10.0 10.11 custom | Not specified |
| CNA | ILIAS-eLearning E.V. | ILIAS | affected 11.0 11.4 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| docu.ilias.de/ilias.php | [email protected] | docu.ilias.de | |
| docu.ilias.de/ilias.php | [email protected] | docu.ilias.de | |
| www.vulncheck.com/advisories/ilias-before-9.23-10.11-and-11.4-missing-authoriza... | [email protected] | www.vulncheck.com | |
| github.com/ILIAS-eLearning/ILIAS/blob/v11.3/components/ILIAS/Group/class... | [email protected] | github.com | |
| docu.ilias.de/ilias.php | [email protected] | docu.ilias.de | |
| github.com/ILIAS-eLearning/ILIAS | [email protected] | github.com | |
| github.com/ILIAS-eLearning/ILIAS/commit/16bca712847f83440fa051cdbb15b382... | [email protected] | github.com | |
| github.com/ILIAS-eLearning/ILIAS/blob/v11.3/components/ILIAS/Group/class... | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Siyang Wu (en)
There are currently no legacy QID mappings associated with this CVE.