---
id: CVE-2026-86416
title: >-
  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
summary: >-
  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. Authe…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'
cwe:
  - CWE-862
vendor: ILIAS-eLearning e.V.
product: ILIAS
affected:
  - ILIAS >= 9.0 < 9.23
  - ILIAS >= 10.0 < 10.11
  - ILIAS >= 11.0 < 11.4
published: '2026-09-07'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:17:18.920'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86416'
references:
  - url: >-
      https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=940
    label: disclosure@vulncheck.com
  - url: >-
      https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=941
    label: disclosure@vulncheck.com
  - url: >-
      https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdClass=ilBlogPostingGUI&cmd=previewFullscreen&ref_id=15821&blpg=942
    label: disclosure@vulncheck.com
  - url: 'https://github.com/ILIAS-eLearning/ILIAS'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ILIAS-eLearning/ILIAS/blob/v11.3/components/ILIAS/Group/classes/class.ilObjGroupGUI.php#L560-L569
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ILIAS-eLearning/ILIAS/blob/v11.3/components/ILIAS/Group/classes/class.ilObjGroupGUI.php#L830-L858
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ILIAS-eLearning/ILIAS/commit/16bca712847f83440fa051cdbb15b38296357c79
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/ilias-before-9.23-10.11-and-11.4-missing-authorization-in-group-object-action-methods
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00446
epssPercentile: 0.36116
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T17:08:48.596258Z'
ingestedAt: '2026-09-08T20:10:03.179Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.