{"cve":"CVE-2025-66402","nvd":{"published":"2025-12-16T00:16:02.207","modified":"2026-10-14T13:10:00.187","status":"Analyzed","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. Version 2025.12.0 fixes the issue.","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":7.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-862"],"references":["https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b","https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3","https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3"],"products":["misskey:misskey"],"source":"nvd","synced_at":"2026-10-19T22:17:07.138532058+00:00"},"epss":{"cve":"CVE-2025-66402","score":0.00314,"percentile":0.24072,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-496g-mmpw-j9x3","url":"https://osv.dev/vulnerability/GHSA-496g-mmpw-j9x3","summary":"misskey.js's export data contains private post data","modified":"2026-02-03T03:16:36.683009Z","packages":[{"ecosystem":"npm","name":"misskey-js","purl":"pkg:npm/misskey-js","ranges":[">=13.0.0-beta.16 <2025.12.0"],"fixed":["2025.12.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}