CVE-2021-36132

Name: CVE-2021-36132
Creator: NVD / NIST
Published: 2021-07-02T13:15:07.953+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.02%

Last modified Jun 17, 2026

CVE-2021-36132 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in the FileImporter extension in MediaWiki through 1.36. For certain relaxed configurations of the $wgFileImporterRequiredRight variable, it might not validate all appropriate user rights, thus allowing a user with insufficient rights to perform operations (specifically file uploads) that they should not be allowed to perform.. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

Description

An issue was discovered in the FileImporter extension in MediaWiki through 1.36. For certain relaxed configurations of the $wgFileImporterRequiredRight variable, it might not validate all appropriate user rights, thus allowing a user with insufficient rights to perform operations (specifically file uploads) that they should not be allowed to perform.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.02%

59.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	<= 1.36

References

https://gerrit.wikimedia.org/r/q/I8ff2a67abd2c118a3469e4410eac2a451bfa76c3Patch, Vendor Advisory
https://phabricator.wikimedia.org/T280590Exploit, Patch, Vendor Advisory
https://gerrit.wikimedia.org/r/q/I8ff2a67abd2c118a3469e4410eac2a451bfa76c3Patch, Vendor Advisory
https://phabricator.wikimedia.org/T280590Exploit, Patch, Vendor Advisory

Timeline

Published: Jul 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36132?

How severe is CVE-2021-36132?

CVE-2021-36132 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36132?

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-2021-36132?

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

Scan your code now

Source: NVD / NIST