CVE-2024-40597

Name: CVE-2024-40597
Creator: NVD / NIST
Published: 2024-07-07T00:15:10.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2024-40597 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in the CheckUser extension for MediaWiki through 1.42.1. It can expose suppressed information for log events. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.42.1. It can expose suppressed information for log events. (The log_deleted attribute is not respected.)

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.40%

32.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	<= 1.42.1

References

https://phabricator.wikimedia.org/T326865Issue Tracking, Vendor Advisory
https://phabricator.wikimedia.org/T326865Issue Tracking, Vendor Advisory

Timeline

Published: Jul 7, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-40597?

An issue was discovered in the CheckUser extension for MediaWiki through 1.42.1. It can expose suppressed information for log events. (The log_deleted attribute is not respected.)

How severe is CVE-2024-40597?

CVE-2024-40597 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2024-40597?

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-2024-40597?

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

Scan your code now

Source: NVD / NIST