CVE-2022-34750
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 |
|---|---|---|
| Wikimedia MediaWiki | <=1.38.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-34750?
CVE-2022-34750 has a medium severity rating due to its potential to enable denial-of-service attacks.
How do I fix CVE-2022-34750?
To resolve CVE-2022-34750, upgrade to MediaWiki version 1.38.2 or later, where this vulnerability has been addressed.
What systems are affected by CVE-2022-34750?
CVE-2022-34750 affects MediaWiki versions up to and including 1.38.1.
What are the implications of exploiting CVE-2022-34750?
Exploiting CVE-2022-34750 can allow attackers to create massive lexemes, leading to potential denial-of-service conditions.
Is CVE-2022-34750 a critical vulnerability?
CVE-2022-34750 is not classified as critical but poses significant risks if left unaddressed.
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