Medium severity5.4NVD Advisory· Published Apr 22, 2021· Updated Jun 17, 2026
CVE-2021-31550
CVE-2021-31550
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4- Range: <=1.35.2
- MediaWiki/CommentBox extensiondescription
Patches
Vulnerability mechanics
References
2- gerrit.wikimedia.org/r/c/mediawiki/extensions/Commentbox/+/651934/nvdIssue TrackingVendor Advisory
- phabricator.wikimedia.org/T270767nvdThird Party Advisory
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