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.
Published: 2022-06-28
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2022-37698 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.

Subscriptions

Mediawiki Mediawiki
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

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

Reserved: 2022-06-28T00:00:00.000Z

Link: CVE-2022-34750

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

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

Modified: 2024-11-21T07:10:07.007

Link: CVE-2022-34750

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses