{"id":"CVE-2025-66402","title":"Misskey is an open source, federated social media platform","summary":"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 content…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-862"],"vendor":"misskey","product":"misskey","affected":["misskey >= 13.1.0, < 2025.12.0","misskey = 13.0.0"],"patched":["misskey 2025.12.0"],"published":"2025-12-16","updated":"2026-10-14","sourceUpdated":"2026-10-14T13:10:00.187","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-66402","references":[{"url":"https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b","label":"security-advisories@github.com"},{"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3","label":"security-advisories@github.com"},{"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00314,"epssPercentile":0.22529,"ingestedAt":"2026-10-14T13:30:58.434Z","slug":"CVE-2025-66402","body":"## Overview\n\nMisskey 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. Version 2025.12.0 fixes the issue.\n\n## Affected\n\n- `misskey >= 13.1.0, < 2025.12.0`\n- `misskey = 13.0.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `misskey 2025.12.0`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}