What is CVE-2025-3635?

CVE-2025-3635 is a low-severity vulnerability in Moodle, classified under Cross-Site Request Forgery (CSRF). CVSS score: 3.5/10. Published 2025-04-25.

How severe is CVE-2025-3635?

Low severity. CVSS v3 base score is 3.5 out of 10.

Is CVE-2025-3635 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

CSRF in Moodle

CVE-2025-3635

A security vulnerability was discovered in Moodle that allows anyone to duplicate existing tours without needing to log in due to a lack of protection against cross-site request forgery (CSRF) attacks.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.002 (6.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Moodle

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

patrick@puiterwijk.org (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
patrick@puiterwijk.org (x_refsource_REDHAT, issue-tracking, Issue Tracking)

Frequently asked questions

What is CVE-2025-3635?: CVE-2025-3635 is a low-severity vulnerability in Moodle, classified under Cross-Site Request Forgery (CSRF). CVSS score: 3.5/10. Published 2025-04-25.
How severe is CVE-2025-3635?: Low severity. CVSS v3 base score is 3.5 out of 10.
Is CVE-2025-3635 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.