CVE-2021-29483

Name: CVE-2021-29483
Creator: NVD / NIST
Published: 2021-04-28T22:15:08.337+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.21%

Last modified Jun 17, 2026

CVE-2021-29483 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. ManageWiki is an extension to the MediaWiki project. The 'wikiconfig' API leaked the value of private configuration variables set through the ManageWiki variable to all users. EPSS estimates a 1.21% chance of exploitation in the next 30 days.

Description

ManageWiki is an extension to the MediaWiki project. The 'wikiconfig' API leaked the value of private configuration variables set through the ManageWiki variable to all users. This has been patched by https://github.com/miraheze/ManageWiki/compare/99f3b2c8af18...befb83c66f5b.patch. If you are unable to patch set `$wgAPIListModules['wikiconfig'] = 'ApiQueryDisabled';` or remove private config as a workaround.

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

1.21%

64.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Miraheze	Managewiki	< 2021-04-28

References

https://github.com/miraheze/ManageWiki/commit/befb83c66f5b643e174897ea41a8a46679b26304Patch, Third Party Advisory
https://github.com/miraheze/ManageWiki/security/advisories/GHSA-jmc9-rv2f-g8vvMitigation, Patch, Third Party Advisory
https://phabricator.miraheze.org/T7213Issue Tracking, Third Party Advisory
https://github.com/miraheze/ManageWiki/commit/befb83c66f5b643e174897ea41a8a46679b26304Patch, Third Party Advisory
https://github.com/miraheze/ManageWiki/security/advisories/GHSA-jmc9-rv2f-g8vvMitigation, Patch, Third Party Advisory
https://phabricator.miraheze.org/T7213Issue Tracking, Third Party Advisory

Timeline

Published: Apr 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29483?

How severe is CVE-2021-29483?

CVE-2021-29483 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29483?

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-2021-29483?

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

Scan your code now

Source: NVD / NIST