{"api_version":"1","generated_at":"2026-07-23T13:02:03+00:00","cve":"CVE-2021-30153","urls":{"html":"https://cve.report/CVE-2021-30153","api":"https://cve.report/api/cve/CVE-2021-30153.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-30153","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-30153"},"summary":{"title":"CVE-2021-30153","description":"An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35.x before 1.35.2. . When using VisualEditor to edit a MediaWiki user page belonging to an existing, but hidden, user, VisualEditor will disclose that the user exists. (It shouldn't because they are hidden.) 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This is related to ApiVisualEditor."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://phabricator.wikimedia.org/T270453","refsource":"MISC","name":"https://phabricator.wikimedia.org/T270453"},{"refsource":"CONFIRM","name":"https://lists.wikimedia.org/pipermail/wikitech-l/2021-April/094418.html","url":"https://lists.wikimedia.org/pipermail/wikitech-l/2021-April/094418.html"},{"refsource":"CONFIRM","name":"https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/message/XYBF5RSTJRMVCP7QBYK7643W75A3KCIY/","url":"https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/message/XYBF5RSTJRMVCP7QBYK7643W75A3KCIY/"}]}},"nvd":{"publishedDate":"2023-04-15 20:16:00","lastModifiedDate":"2023-11-07 03:32:00","problem_types":["CWE-668"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":1.4}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","versionStartIncluding":"1.32.0","versionEndExcluding":"1.35.2","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*","versionEndExcluding":"1.31.13","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"30153","Ordinal":"205385","Title":"CVE-2021-30153","CVE":"CVE-2021-30153","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"30153","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}