CVE-2024-23171

Name: CVE-2024-23171
Creator: NVD / NIST
Published: 2024-01-12T05:15:10.033+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.41%

Last modified Jun 17, 2026

CVE-2024-23171 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. An issue was discovered in the CampaignEvents extension in MediaWiki before 1.35.14, 1.36.x through 1.39.x before 1.39.6, and 1.40.x before 1.40.2. The Special:EventDetails page allows XSS via the x-xss language setting for internationalization (i18n).. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

Description

An issue was discovered in the CampaignEvents extension in MediaWiki before 1.35.14, 1.36.x through 1.39.x before 1.39.6, and 1.40.x before 1.40.2. The Special:EventDetails page allows XSS via the x-xss language setting for internationalization (i18n).

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.41%

32.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	< 1.35.14
Mediawiki	Mediawiki	>= 1.36.0, < 1.39.6
Mediawiki	Mediawiki	>= 1.40.0, < 1.40.2

References

https://gerrit.wikimedia.org/r/q/I70d71c409193e904684dfb706d424b0a815fa6f6Patch
https://phabricator.wikimedia.org/T348343Exploit, Vendor Advisory
https://gerrit.wikimedia.org/r/q/I70d71c409193e904684dfb706d424b0a815fa6f6Patch
https://phabricator.wikimedia.org/T348343Exploit, Vendor Advisory

Timeline

Published: Jan 12, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-23171?

How severe is CVE-2024-23171?

CVE-2024-23171 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2024-23171?

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-2024-23171?

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

Scan your code now

Source: NVD / NIST