What is the severity of CVE-2021-31550?

CVE-2021-31550 has been rated as a moderate severity vulnerability.

How do I fix CVE-2021-31550?

To fix CVE-2021-31550, upgrade the CommentBox extension and MediaWiki to versions beyond 1.35.2.

What type of vulnerability is CVE-2021-31550?

CVE-2021-31550 is a cross-site scripting (XSS) vulnerability.

Who is affected by CVE-2021-31550?

Users of the CommentBox extension for MediaWiki versions up to 1.35.2 are affected by CVE-2021-31550.

How can CVE-2021-31550 be exploited?

CVE-2021-31550 can be exploited by a malicious actor using crafted configuration variables to inject XSS payloads.

Vulnerability/
CVE-2021-31550

medium

5.4

CWE

22/4/2021

3/8/2024

CVE-2021-31550: XSS

First published: Thu Apr 22 2021(Updated: )

An issue was discovered in the CommentBox extension for MediaWiki through 1.35.2. Via crafted configuration variables, a malicious actor could introduce XSS payloads into various layers.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Wikimedia MediaWiki	<=1.35.2

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-31550?
CVE-2021-31550 has been rated as a moderate severity vulnerability.
How do I fix CVE-2021-31550?
To fix CVE-2021-31550, upgrade the CommentBox extension and MediaWiki to versions beyond 1.35.2.
What type of vulnerability is CVE-2021-31550?
CVE-2021-31550 is a cross-site scripting (XSS) vulnerability.
Who is affected by CVE-2021-31550?
Users of the CommentBox extension for MediaWiki versions up to 1.35.2 are affected by CVE-2021-31550.
How can CVE-2021-31550 be exploited?
CVE-2021-31550 can be exploited by a malicious actor using crafted configuration variables to inject XSS payloads.

agent/references
agent/type
agent/weakness
agent/severity
agent/author
agent/softwarecombine
agent/description
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/event
agent/first-publish-date
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/mediawiki
canonical/wikimedia mediawiki
version/wikimedia mediawiki/1.35.2

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Frequently Asked Questions

What is the severity of CVE-2021-31550?
CVE-2021-31550 has been rated as a moderate severity vulnerability.
How do I fix CVE-2021-31550?
To fix CVE-2021-31550, upgrade the CommentBox extension and MediaWiki to versions beyond 1.35.2.
What type of vulnerability is CVE-2021-31550?
CVE-2021-31550 is a cross-site scripting (XSS) vulnerability.
Who is affected by CVE-2021-31550?
Users of the CommentBox extension for MediaWiki versions up to 1.35.2 are affected by CVE-2021-31550.
How can CVE-2021-31550 be exploited?
CVE-2021-31550 can be exploited by a malicious actor using crafted configuration variables to inject XSS payloads.