{"id":"CVE-2026-28433","summary":"Misskey lacks resource ownership validation","details":"Misskey is an open source, federated social media platform. All Misskey servers running versions 10.93.0 and later, but prior to 2026.3.1, contain a vulnerability that allows importing other users' data due to lack of ownership validation. The impact of this vulnerability is estimated to be relatively low, as bad actors would require the ID corresponding to the target file for import. This vulnerability is fixed in 2026.3.1.","aliases":["GHSA-g6hj-33h7-6fq8"],"modified":"2026-08-12T03:51:39.265018688Z","published":"2026-03-09T21:21:06.403Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-639","CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28433.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28433.json"},{"type":"ADVISORY","url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-g6hj-33h7-6fq8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28433"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/misskey-dev/misskey","events":[{"introduced":"60e0b19372320dcd84737a488a5092a120394ee7"},{"fixed":"4ec56ba9f65d2756125c54a86f575ae947db21f6"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"10.93.0"},{"fixed":"2026.3.1"}]}}],"versions":["2026.3.1-alpha.0","2026.3.0","2026.3.0-alpha.0","2026.2.0-beta.0","2026.2.0-alpha.0","2026.1.0-beta.0","2026.1.0-alpha.4","2026.1.0-alpha.3","2026.1.0-alpha.2","2026.1.0-alpha.1","2026.1.0-alpha.0","2025.12.2","2025.12.2-beta.4","2025.12.2-beta.3","2025.12.2-beta.2","2025.12.2-alpha.0","2025.12.1","2025.12.1-alpha.1","2025.12.1-alpha.0","2025.12.0","2025.12.0-beta.0","2025.12.0-alpha.2","2025.12.0-alpha.1","2025.12.0-alpha.0","2025.11.2-alpha.4","2025.11.2-alpha.3","2025.11.2-alpha.2","2025.11.2-alpha.1","2025.11.2-alpha.0","2025.11.1","2025.11.1-beta.3","2025.11.1-beta.2","2025.11.1-beta.1","2025.11.1-beta.0","2025.11.1-alpha.2","2025.11.1-alpha.1","2025.11.1-alpha.0","2025.11.0","2025.11.0-rc.0","2025.11.0-beta.0","2025.11.0-alpha.4","2025.11.0-alpha.3","2025.11.0-alpha.2","2025.11.0-alpha.1","2025.11.0-alpha.0","2025.10.2","2025.10.2-beta.0","2025.10.2-alpha.0","2025.10.1","2025.10.1-beta.4","2025.10.1-beta.2","2025.10.1-beta.1","2025.10.1-beta.0","2025.10.1-alpha.6","2025.10.1-alpha.5","2025.10.1-alpha.4","2025.10.1-alpha.2","2025.10.1-alpha.1","2025.10.1-alpha.0","2025.10.0","2025.10.0-beta.2","2025.10.0-beta.1","2025.10.0-beta.0","2025.10.0-alpha.0","2025.9.1-alpha.2","2025.9.1-alpha.1","2025.9.1-alpha.0","2025.9.0","2025.9.0-rc.0","2025.9.0-beta.1","2025.9.0-beta.0","2025.9.0-alpha.2","2025.9.0-alpha.1","2025.9.0-alpha.0","2025.8.0","2025.8.0-rc.0","2025.8.0-beta.6","2025.8.0-beta.5","2025.8.0-beta.4","2025.8.0-beta.3","2025.8.0-beta.2","2025.8.0-beta.1","2025.8.0-beta.0","2025.8.0-alpha.13","2025.8.0-alpha.12","2025.8.0-alpha.11","2025.8.0-alpha.9","2025.8.0-alpha.8","2025.8.0-alpha.7","2025.8.0-alpha.6","2025.8.0-alpha.5","2025.8.0-alpha.4","2025.8.0-alpha.3","2025.8.0-alpha.2","2025.8.0-alpha.1","2025.8.0-alpha.0","2025.7.0","2025.7.0-rc.1","2025.7.0-rc.0","2025.7.0-beta.2","2025.7.0-beta.1","2025.7.0-alpha.0","2025.6.4-alpha.4","2025.6.4-alpha.3","2025.6.4-alpha.2","2025.6.4-alpha.1","2025.6.4-alpha.0","2025.6.3","2025.6.3-alpha.0","2025.6.2","2025.6.2-alpha.0","2025.6.1","2025.6.1-rc.0","2025.6.1-beta.2","2025.6.1-beta.1","2025.6.1-beta.0","2025.6.1-alpha.4","2025.6.1-alpha.2","2025.6.1-alpha.1","2025.6.1-alpha.0","2025.6.0","2025.6.0-beta.1","2025.6.0-beta.0","2025.6.0-alpha.0","2025.5.1","2025.5.1-beta.6","2025.5.1-beta.5","2025.5.1-beta.4","2025.5.1-beta.3","2025.5.1-beta.2","2025.5.1-beta.1","2025.5.1-alpha.5","2025.5.1-alpha.4","2025.5.1-alpha.3","2025.5.1-alpha.2","2025.5.1-alpha.1","2025.5.1-alpha.0","2025.5.0","2025.5.0-rc.0","2025.5.0-beta.0","2025.5.0-alpha.2","2025.5.0-alpha.1","2025.5.0-alpha.0","2025.4.1","2025.4.1-rc.0","2025.4.1-beta.9","2025.4.1-beta.8","2025.4.1-beta.7","2025.4.1-beta.6","2025.4.1-beta.2","2025.4.1-beta.0","2025.4.1-alpha.2","2025.4.1-alpha.1","2025.4.1-alpha.0","2025.4.0","2025.4.0-rc.5","2025.4.0-rc.4","2025.4.0-rc.0","2025.4.0-beta.1","2025.4.0-beta.0","2025.4.0-alpha.0","2025.3.2-beta.21","2025.3.2-beta.20","2025.3.2-beta.19","2025.3.2-beta.17","2025.3.2-beta.15","2025.3.2-beta.14","2025.3.2-beta.13","2025.3.2-beta.12","2025.3.2-beta.11","2025.3.2-beta.10","2025.3.2-beta.9","2025.3.2-beta.8","2025.3.2-beta.5","2025.3.2-beta.4","2025.3.2-beta.2","2025.3.2-beta.1","2025.3.2-beta.0","2025.3.2-alpha.11","2025.3.2-alpha.10","2025.3.2-alpha.8","2025.3.2-alpha.4","2025.3.2-alpha.3","2025.3.2-alpha.2","2025.3.2-alpha.1","2025.3.1","2025.3.1-beta.3","2025.3.1-beta.2","2025.3.1-beta.1","2025.3.1-beta.0","2025.3.1-alpha.0","2025.3.0","2025.3.0-beta.2","2025.3.0-beta.1","2025.3.0-beta.0","2025.3.0-alpha.0","2025.2.1","2025.2.1-beta.2","2025.2.1-beta.1","2025.2.1-beta.0","2025.2.1-alpha.0","2025.2.0","2025.2.0-beta.1","2025.2.0-beta.0","2025.2.0-alpha.0","2025.1.0","2025.1.0-beta.3","2025.1.0-beta.2","2025.1.0-beta.1","2025.1.0-beta.0","2025.1.0-alpha.0","2024.11.0","2024.11.0-beta.4","2024.11.0-alpha.3","2024.11.0-alpha.2","2024.11.0-alpha.1","2024.10.2-alpha.2","2024.10.2-alpha.1","2024.10.2-alpha.0","2024.10.1","2024.10.1-beta.6","2024.10.1-beta.5","2024.10.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