Cyber Resilience

CVE-2025-67852

Open Redirect in Moodle ≤ 4.1.22

Open Redirect
Published
03 February 2026
Modified
11 February 2026
CVSS Score v3.1 3.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
EPSS Score 0.0023 13th percentile
Risk Priority 15 floored blend · peak EPSS

Summary

CVE-2025-67852 is a low-severity Open Redirect (CWE-601) vulnerability in Moodle Moodle. Its CVSS base score is 3.5 (Low).

Operationally, ranked at the 13th 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 AC-3 (Access Enforcement) and SI-10 (Information Input Validation) — 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

A flaw was found in Moodle. An open redirect vulnerability in the OAuth login flow allows a remote attacker to redirect users to attacker-controlled pages after they have successfully authenticated. This occurs due to insufficient validation of redirect parameters, which…

more

could lead to phishing attacks or information disclosure.

CWE(s)
CWE-601

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

Insufficient information to map techniques.
Confidence: LOW · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2023-28331Same product: Moodle Moodle
CVE-2024-43433Same product: Moodle Moodle
CVE-2023-5541Same product: Moodle Moodle
CVE-2024-1439Same product: Moodle Moodle
CVE-2025-62398Same product: Moodle Moodle
CVE-2025-67856Same product: Moodle Moodle
CVE-2025-3643Same product: Moodle Moodle
CVE-2026-26045Same product: Moodle Moodle
CVE-2025-67847Same product: Moodle Moodle
CVE-2025-3641Same product: Moodle Moodle

Affected Assets

moodle
moodle
5.1.0 · ≤ 4.1.22 · 4.4.0 — 4.4.11 · 4.5.0 — 4.5.8

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SI-10 Information Input Validation
  • AC-3 Access Enforcement
  • AC-4 Information Flow Enforcement
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 redirect_uri and other input parameters in the OAuth flow to block attacker-controlled destinations.

AC-3 Access Enforcement good match
prevent

Enforces that only authorized redirect targets are permitted after successful authentication, stopping the open redirect.

AC-4 Information Flow Enforcement partial match
prevent

Controls information flow by restricting unauthorized external redirects that could enable phishing or data leakage.

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