CVE-2024-47845

Name: CVE-2024-47845
Creator: NVD / NIST
Published: 2024-10-05T01:15:12.237+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2024-47845 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. Improper Encoding or Escaping of Output vulnerability in The Wikimedia Foundation Mediawiki - CSS Extension allows Code Injection.This issue affects Mediawiki - CSS Extension: from 1.39.X before 1.39.9, from 1.41.X before 1.41.3, from 1.42.X before 1.42.2.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

Improper Encoding or Escaping of Output vulnerability in The Wikimedia Foundation Mediawiki - CSS Extension allows Code Injection.This issue affects Mediawiki - CSS Extension: from 1.39.X before 1.39.9, from 1.41.X before 1.41.3, from 1.42.X before 1.42.2.

Metrics

CVSS 3.1

8.2/10

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

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.38%

29.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Wikimedia	Wikimedia-Extensions-Css	>= 1.39.0, < 1.39.9
Wikimedia	Wikimedia-Extensions-Css	>= 1.41.0, < 1.41.3
Wikimedia	Wikimedia-Extensions-Css	>= 1.42.0, < 1.42.2

References

https://gerrit.wikimedia.org/r/q/I6f38f4a8fc1dcd690ab27b8f18ce6ca903bacc53Patch
https://phabricator.wikimedia.org/T368594Exploit, Issue Tracking, Vendor Advisory
https://phabricator.wikimedia.org/T368628Issue Tracking, Vendor Advisory

Timeline

Published: Oct 5, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-47845?

How severe is CVE-2024-47845?

CVE-2024-47845 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2024-47845?

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-2024-47845?

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

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Source: NVD / NIST