# CVE-2025-52475: Chamilo: Reflected XSS via keyword_inactive parameter

> Attackers can inject malicious JavaScript via the keyword_inactive parameter in Chamilo LMS, potentially compromising user sessions.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Mar 2026
- **Updated:** 3 Mar 2026
- **Also known as:** GHSA-7p5f-34rx-49h8

## What is CVE-2025-52475?

CVE-2025-52475 is a medium-severity cross-site scripting vulnerability in Chamilo Chamilo Lms, published on 2 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Chamilo is a learning management system. Prior to version 1.11.30, there is a reflected cross-site scripting (XSS) vulnerability in the admin/user_list.php endpoint. The keyword_inactive parameter is not properly sanitized, allowing attackers to inject malicious JavaScript through a crafted URL. This issue has been patched in version 1.11.30.

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

## Which versions are affected by CVE-2025-52475?

It affects 1 product.


Products: Chamilo Chamilo Lms.

## How do I fix CVE-2025-52475?

No fix has been published for CVE-2025-52475 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-52475 being exploited?

There is no known exploitation of CVE-2025-52475 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-2025-52475 and fix it if it is affected.

What it is: CVE-2025-52475 is a medium-severity cross-site scripting vulnerability in Chamilo Chamilo Lms, published on 2 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-52475 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-2025-52475/ (Markdown: https://insights.sbomify.com/CVE-2025-52475/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-52475
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-52475
- OSV: https://osv.dev/vulnerability/CVE-2025-52475

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-52475/
Summaries are generated and may contain mistakes; the official description above is the record.