First published: Tue Jun 28 2022(Updated: )
An issue was discovered in MediaWiki through 1.38.1. The lemma length of a Wikibase lexeme is currently capped at a thousand characters. Unfortunately, this length is not validated, allowing much larger lexemes to be created, which introduces various denial-of-service attack vectors within the Wikibase and WikibaseLexeme extensions. This is related to Special:NewLexeme and Special:NewProperty.
Credit: cve@mitre.org
Affected Software | Affected Version | How to fix |
---|---|---|
MediaWiki MediaWiki | <=1.38.1 |
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