{"id":"CVE-2022-34750","details":"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.","aliases":["BIT-mediawiki-2022-34750"],"modified":"2026-08-12T03:51:38.287365558Z","published":"2022-06-28T12:20:42Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"fixed":"1.38.1"}],"source":"DESCRIPTION"}],"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/34xxx/CVE-2022-34750.json"},"references":[{"type":"WEB","url":"https://gerrit.wikimedia.org/r/q/I8171bfef73e525d73efa60b407ce147130ea4742"},{"type":"WEB","url":"https://gerrit.wikimedia.org/r/q/Id89a9b08e40f075d2d422cafd03668dff3ce7fc9"},{"type":"WEB","url":"https://phabricator.wikimedia.org/T308659"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/34xxx/CVE-2022-34750.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-34750"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wikimedia/mediawiki","events":[{"introduced":"0"},{"last_affected":"d7db51b9e2e2089937bbe1a52a81ee420d19a12d"}],"database_specific":{"cpe":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.38.1"}],"source":"CPE_RANGE"}}],"versions":["1.38.1","1.38.0","1.38.0-rc.1","1.38.0-rc.0","test-hashar-for-ci","1.6.0","1.5.0beta4","1.5.0beta3","1.5.0beta2","1.5.0beta1","1.5.0alpha2","1.5.0alpha1","1.3.0beta1","1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-34750.json"}}],"schema_version":"1.9.0"}