# CVE-2025-11346: ILIAS Base64 Decoding unserialize deserialization

> Remote attackers can exploit unsafe deserialization in ILIAS Base64 decoding to execute arbitrary code, requiring an upgrade to patched versions.

- **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:** 6 Oct 2025
- **Updated:** 24 Feb 2026
- **Also known as:** GHSA-p8xp-jr72-jpj4

## What is CVE-2025-11346?

CVE-2025-11346 is a medium-severity unsafe deserialization vulnerability in ILIAS, published on 6 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been found in ILIAS up to 8.23/9.13/10.1. This affects the function unserialize of the component Base64 Decoding Handler. Such manipulation of the argument f_settings leads to deserialization. It is possible to launch the attack remotely. Upgrading to version 8.24, 9.14 and 10.2 is able to mitigate this issue. It is advisable to upgrade the affected component.

Weakness: CWE-502 (Deserialization of Untrusted Data), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2025-11346?

It affects 1 product.


Products: Ilias Ilias.

## How do I fix CVE-2025-11346?

No fix has been published for CVE-2025-11346 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-11346 being exploited?

There is no known exploitation of CVE-2025-11346 in the wild and no public exploit code.

## Other vulnerabilities in ILIAS

- [CVE-2023-36487](https://insights.sbomify.com/CVE-2023-36487/): Auth bypass in n/a (critical 9.8)
- [CVE-2023-45869](https://insights.sbomify.com/CVE-2023-45869/): Cross-site scripting in n/a (critical 9.0)
- [CVE-2022-45915](https://insights.sbomify.com/CVE-2022-45915/): Command injection in n/a (high 8.8)
- [CVE-2020-23996](https://insights.sbomify.com/CVE-2020-23996/): Path traversal in n/a (high 8.8)
- [CVE-2020-25268](https://insights.sbomify.com/CVE-2020-25268/): Code injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-11346 and fix it if it is affected.

What it is: CVE-2025-11346 is a medium-severity unsafe deserialization vulnerability in ILIAS, published on 6 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-11346 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-2025-11346/ (Markdown: https://insights.sbomify.com/CVE-2025-11346/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-11346
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-11346
- OSV: https://osv.dev/vulnerability/CVE-2025-11346

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-11346/
Summaries are generated and may contain mistakes; the official description above is the record.