VULNERABILITY INTELLIGENCE

CVE-2022-34750

CVSS score7.5 HIGH
EPSS probability1.31%
CISA KEVNot currently listed
Published2022-06-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • CWE-770: Allocation of Resources Without Limits or Throttling

Primary references