{"id":"CVE-2026-86416","aliases":["EUVD-2026-72363","GHSA-4976-qg89-r3vv"],"status":"published","title":"ILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action Methods","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.","severity":{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00446,"percentile":0.39183,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-09-07T12:23:54Z","modified":"2026-10-28T02:31:12Z","products":[{"vendor":"ilias-elearning e.v.","product":"ilias"}],"references":[{"url":"https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui\u0026cmdNode=wy:ll:6t\u0026cmdClass=ilBlogPostingGUI\u0026cmd=previewFullscreen\u0026ref_id=15821\u0026blpg=942","tags":["vendor-advisory","advisory"]},{"url":"https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui\u0026cmdNode=wy:ll:6t\u0026cmdClass=ilBlogPostingGUI\u0026cmd=previewFullscreen\u0026ref_id=15821\u0026blpg=941","tags":["vendor-advisory","advisory"]},{"url":"https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui\u0026cmdNode=wy:ll:6t\u0026cmdClass=ilBlogPostingGUI\u0026cmd=previewFullscreen\u0026ref_id=15821\u0026blpg=940","tags":["vendor-advisory","advisory"]},{"url":"https://github.com/ILIAS-eLearning/ILIAS/commit/16bca712847f83440fa051cdbb15b38296357c79","tags":["patch","fix"]},{"url":"https://github.com/ILIAS-eLearning/ILIAS/blob/v11.3/components/ILIAS/Group/classes/class.ilObjGroupGUI.php#L560-L569","tags":["technical-description","article"]},{"url":"https://github.com/ILIAS-eLearning/ILIAS/blob/v11.3/components/ILIAS/Group/classes/class.ilObjGroupGUI.php#L830-L858","tags":["technical-description","article"]},{"url":"https://github.com/ILIAS-eLearning/ILIAS","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/ilias-before-9.23-10.11-and-11.4-missing-authorization-in-group-object-action-methods","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86416","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4976-qg89-r3vv"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86416.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-86416","title":"ILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action Methods","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.","status":"published","published":"2026-09-07T12:23:54.71Z","modified":"2026-09-18T17:23:10.22Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T13:49:31.546614Z"}],"euvd":[{"id":"EUVD-2026-72363","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.","status":"published","published":"2026-09-07T12:23:54Z","modified":"2026-09-18T17:23:10Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:28:08.412343Z"}],"ghsa":[{"id":"GHSA-4976-qg89-r3vv","title":"ILIAS versions before 9.23, 10.11, and 11.4 contain an authorization bypass vulnerability in...","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.","status":"published","published":"2026-09-07T15:33:52Z","modified":"2026-09-07T15:33:56Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:11:27.182088Z"}],"nvd":[{"id":"CVE-2026-86416","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.","status":"published","published":"2026-09-07T13:20:40.233Z","modified":"2026-09-18T18:17:18.92Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:44.436435Z"}],"osv":[{"id":"CVE-2026-86416","title":"ILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action Methods","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.","status":"published","published":"2026-09-07T12:23:54.71Z","modified":"2026-10-28T02:31:12.707537166Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:45:18.825071Z"}]}}