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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-06-28T12:20:42

Updated: 2024-08-03T09:22:09.260Z

Reserved: 2022-06-28T00:00:00

Link: CVE-2022-34750

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-06-28T13:15:12.817

Modified: 2022-07-07T12:39:39.787

Link: CVE-2022-34750

cve-icon Redhat

No data.