CVE-2021-46149: High severity mediawiki vulnerability

Published Jan 7, 2022
·
Updated

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A denial of service (resource consumption) can be accomplished by searching for a very long key in a Language Name Search.

Affected Software

3 affected components
MediaWiki MediaWiki<1.35.5
MediaWiki MediaWiki>=1.36.0<1.36.3
MediaWiki MediaWiki>=1.37.0<1.37.1

Event History

Jan 7, 2022
CVE Published
via MITRE·05:53 AM
Data Sourced
via MITRE·05:53 AM
Description
Jan 10, 2022
Data Sourced
via NVD·02:11 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-46149?

CVE-2021-46149 is categorized as a denial of service vulnerability.

2

How do I fix CVE-2021-46149?

To mitigate CVE-2021-46149, upgrade MediaWiki to version 1.35.5, 1.36.3, or 1.37.1 or later.

3

What versions of MediaWiki are affected by CVE-2021-46149?

CVE-2021-46149 affects MediaWiki versions prior to 1.35.5, between 1.36.0 and 1.36.3, and between 1.37.0 and 1.37.1.

4

What type of attack does CVE-2021-46149 enable?

CVE-2021-46149 enables a denial of service attack through resource consumption by searching for excessively long keys.

5

How can I verify if I am vulnerable to CVE-2021-46149?

You can verify vulnerability to CVE-2021-46149 by checking your MediaWiki version against the specified affected versions.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203