Cyber Resilience

CVE-2025-66447

Open Redirect in Chamilo Lms ≤ 1.11.38

Open Redirect
Published
10 April 2026
Modified
17 April 2026
Patch / advisory
View advisory
CVSS Score v3.1 0.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
EPSS Score 0.0016 6th percentile
Risk Priority 0 floored blend · peak EPSS

Summary

CVE-2025-66447 is a uncategorised-severity Open Redirect (CWE-601) vulnerability in Chamilo Chamilo Lms. Its CVSS base score is 0.0.

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and AC-4 (Information Flow Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

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.

CWE(s)
CWE-601

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Open redirect via the 'redirect' parameter on /login enables exploitation of a public-facing web application (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-32932Same product: Chamilo Chamilo Lms
CVE-2025-50187Same product: Chamilo Chamilo Lms
CVE-2025-52469Same product: Chamilo Chamilo Lms
CVE-2026-33618Same product: Chamilo Chamilo Lms
CVE-2026-33710Same product: Chamilo Chamilo Lms
CVE-2025-50188Same product: Chamilo Chamilo Lms
CVE-2026-33705Same product: Chamilo Chamilo Lms
CVE-2025-50190Same product: Chamilo Chamilo Lms
CVE-2025-52998Same product: Chamilo Chamilo Lms
CVE-2026-1106Same product: Chamilo Chamilo Lms

Affected Assets

chamilo
chamilo lms
2.0.0 · ≤ 1.11.38

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SI-10 Information Input Validation
  • AC-4 Information Flow Enforcement
  • SI-15 Information Output Filtering
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.7.2

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly requires validation of the redirect parameter value to reject untrusted external URLs before performing the login redirect.

AC-4 Information Flow Enforcement partial match
prevent

Enforces information flow policies that can restrict redirects to only approved internal destinations.

SI-15 Information Output Filtering partial match
prevent

Filters outbound redirect responses to ensure they do not contain attacker-supplied malicious targets.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and untrusted-redirect controls that prevent CWE-601.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.23 Web filtering partial match
mitigates

Preventing access to attacker-controlled or malicious sites stops users from being redirected to untrusted locations via open-redirect or phishing links.

References