CVE-2023-36674

Name: CVE-2023-36674
Creator: NVD / NIST
Published: 2023-08-20T18:15:09.93+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2023-36674 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue was discovered in MediaWiki before 1.35.11, 1.36.x through 1.38.x before 1.38.7, 1.39.x before 1.39.4, and 1.40.x before 1.40.1. It is possible to bypass the Bad image list (aka badFile) by using the thumb parameter (aka Manualthumb) of the File syntax.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

An issue was discovered in MediaWiki before 1.35.11, 1.36.x through 1.38.x before 1.38.7, 1.39.x before 1.39.4, and 1.40.x before 1.40.1. It is possible to bypass the Bad image list (aka badFile) by using the thumb parameter (aka Manualthumb) of the File syntax.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.62%

45.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	< 1.35.11
Mediawiki	Mediawiki	>= 1.36.0, < 1.38.7
Mediawiki	Mediawiki	>= 1.39.0, < 1.39.4
Mediawiki	Mediawiki	1.40.0

References

Timeline

Published: Aug 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-36674?

How severe is CVE-2023-36674?

CVE-2023-36674 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2023-36674?

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-2023-36674?

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

Scan your code now

Source: NVD / NIST