CVE-2024-33999

Name: CVE-2024-33999
Creator: NVD / NIST
Published: 2024-05-31T20:15:09.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2024-33999 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The referrer URL used by MFA required additional sanitizing, rather than being used directly.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.54%

41.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Moodle	Moodle	>= 4.3.0, < 4.3.4

References

https://moodle.org/mod/forum/discuss.php?d=458387Vendor Advisory
https://moodle.org/mod/forum/discuss.php?d=458387Vendor Advisory

Timeline

Published: May 31, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-33999?

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

How severe is CVE-2024-33999?

CVE-2024-33999 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2024-33999?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-33999?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST