{"id":"CVE-2025-66402","revision":null,"records":[{"revision":"df74baaf8deb43caa5339fab706794a8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-66402","aliases":[],"title":"misskey.js's export data contains private post data","description":"Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. 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Query the URLs for the two posts using X and add them to your favorites or clips.\n6. Export your favorites or clips using X.\n7. Check the exported data.\n\nNote: Verified in v2025.11.1\n\n### Impact\n\nThis could allow an attacker to view the contents of private posts.\nIf you have pinned private posts, this could be a real problem, as the ID of the private post can be obtained by viewing the user page on the original server.","state":0,"publishedAt":"2025-12-15T20:55:27+00:00","modifiedAt":"2026-02-03T03:16:36.683009+00:00","affected":[{"ecosystem":"npm","name":"misskey-js","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"13.0.0-beta.16"},{"kind":"fixed","version":"2025.12.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3","https://nvd.nist.gov/vuln/detail/CVE-2025-66402","https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b","https://github.com/misskey-dev/misskey"],"sourceUrl":"https://github.com/advisories/GHSA-496g-mmpw-j9x3","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-496g-mmpw-j9x3","identifiers":["GHSA-496g-mmpw-j9x3","CVE-2025-66402"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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