Improper input validation in Moodle

CVE-2024-33999

The referrer URL used by MFA required additional sanitizing, rather than being used directly.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.005 (41.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-33999?
CVE-2024-33999 is a critical-severity vulnerability in Moodle, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2024-05-31.
How severe is CVE-2024-33999?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-33999 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.