# CVE-2025-59542: Chamilo: Account Takeover via Stored XSS in Course Learning Paths

> Attackers can inject malicious scripts into course settings to steal session cookies and take over administrator accounts in Chamilo LMS.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Mar 2026
- **Updated:** 6 Mar 2026
- **Also known as:** GHSA-pxrh-3rcp-h7m6

## What is CVE-2025-59542?

CVE-2025-59542 is a critical cross-site scripting vulnerability in Chamilo Chamilo Lms, published on 6 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Chamilo is a learning management system. Prior to version 1.11.34, there is a stored cross-site scripting (XSS) vulnerability. By injecting malicious JavaScript into the course learning path Settings field, an attacker with a low-privileged account (e.g., trainer) can execute arbitrary JavaScript code in the context of any other user viewing the course information page, including administrators. This allows an attacker to exfiltrate sensitive session cookies or tokens, resulting in account takeover (ATO) of higher-privileged users. This issue has been patched in version 1.11.34.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-59542?

It affects 1 product.


Products: Chamilo Chamilo Lms.

## How do I fix CVE-2025-59542?

No fix has been published for CVE-2025-59542 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-59542 being exploited?

There is no known exploitation of CVE-2025-59542 in the wild and no public exploit code.

## Other vulnerabilities in Chamilo Chamilo Lms

- [CVE-2025-50187](https://insights.sbomify.com/CVE-2025-50187/): Chamilo: Evaluation of untrusted user input leads to Remote Code Execution (critical 9.8)
- [CVE-2023-34944](https://insights.sbomify.com/CVE-2023-34944/): File upload in n/a (critical 9.8)
- [CVE-2022-27423](https://insights.sbomify.com/CVE-2022-27423/): SQL injection in n/a (critical 9.8)
- [CVE-2021-35414](https://insights.sbomify.com/CVE-2021-35414/): SQL injection in n/a (critical 9.8)
- [CVE-2019-13082](https://insights.sbomify.com/CVE-2019-13082/): File upload in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-59542 and fix it if it is affected.

What it is: CVE-2025-59542 is a critical cross-site scripting vulnerability in Chamilo Chamilo Lms, published on 6 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-59542 in the wild and no public exploit code.

Affected product: Chamilo Chamilo Lms. 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-2025-59542/ (Markdown: https://insights.sbomify.com/CVE-2025-59542/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-59542
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-59542
- OSV: https://osv.dev/vulnerability/CVE-2025-59542

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-59542/
Summaries are generated and may contain mistakes; the official description above is the record.