# CVE-2026-86416: ILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action Methods

> Authenticated users with read-only access can modify group settings and permissions due to missing write permission checks in ILIAS.

- **Severity:** Medium 5.3 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-4976-qg89-r3vv

## What is CVE-2026-86416?

CVE-2026-86416 is a medium-severity missing authorization vulnerability in ILIAS-eLearning e.V. ILIAS, published on 7 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-86416?


## How do I fix CVE-2026-86416?

No fix has been published for CVE-2026-86416 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-86416 being exploited?

There is no known exploitation of CVE-2026-86416 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-86416 and fix it if it is affected.

What it is: CVE-2026-86416 is a medium-severity missing authorization vulnerability in ILIAS-eLearning e.V. ILIAS, published on 7 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-86416 in the wild and no public exploit code.

Affected product: ILIAS-eLearning e.V. ILIAS. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-86416/ (Markdown: https://insights.sbomify.com/CVE-2026-86416/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-86416
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-86416
- OSV: https://osv.dev/vulnerability/CVE-2026-86416

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-86416/
Summaries are generated and may contain mistakes; the official description above is the record.