# CVE-2026-85135: ILIAS MediaPool ZipAdapter.php uploadMultipleSubtitleFileObject unrestricted upload

> Remote attackers can upload malicious files via the MediaPool subtitle upload function, potentially leading to code execution.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X`)
- **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:** 3 Sep 2026
- **Updated:** 3 Sep 2026
- **Also known as:** GHSA-vcg5-7xpv-mqv2

## What is CVE-2026-85135?

CVE-2026-85135 is a medium-severity vulnerability in ILIAS, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A security flaw has been discovered in ILIAS up to 9.21/10.9/11.2. This affects the function ilObjMediaObjectGUI::uploadMultipleSubtitleFileObject of the file Services/Repository/Service/Resources/ZipAdapter.php of the component MediaPool. The manipulation results in unrestricted upload. The attack may be launched remotely. Upgrading to version 9.22, 10.10 and 11.3 is able to mitigate this issue. The patch is identified as ef5d7f99fe1ea0381db04b333a2906548b3590e4/b0d61be43671b6bfe91baf469a5ee11e764f2e23. It is recommended to upgrade the affected component.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-85135?


## How do I fix CVE-2026-85135?

No fix has been published for CVE-2026-85135 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-85135 being exploited?

There is no known exploitation of CVE-2026-85135 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-85135 and fix it if it is affected.

What it is: CVE-2026-85135 is a medium-severity vulnerability in ILIAS, published on 3 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-2026-85135 in the wild and no public exploit code.

Affected product: 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-2026-85135/ (Markdown: https://insights.sbomify.com/CVE-2026-85135/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-85135
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-85135
- OSV: https://osv.dev/vulnerability/CVE-2026-85135

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-85135/
Summaries are generated and may contain mistakes; the official description above is the record.