High severity7.5NVD Advisory· Published Jun 28, 2022· Updated Jun 17, 2026
CVE-2022-34750
CVE-2022-34750
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6- Range: <=1.38.1
- Range: <=1.38.1
Patches
Vulnerability mechanics
References
3- gerrit.wikimedia.org/r/q/I8171bfef73e525d73efa60b407ce147130ea4742nvdVendor Advisory
- gerrit.wikimedia.org/r/q/Id89a9b08e40f075d2d422cafd03668dff3ce7fc9nvdVendor Advisory
- phabricator.wikimedia.org/T308659nvdMailing List
News mentions
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