CVE-2025-66402

misskey.js's export data contains private post data

Published Dec 15, 2025 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-496g-mmpw-j9x3 misskey.js's export data contains private post data
History
Type Values Removed Values Added
CPEs cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:-:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta16:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta21:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta22:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta23:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta24:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta25:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta26:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta27:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta28:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta29:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta30:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta31:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta32:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta33:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta34:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta35:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta36:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta37:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta38:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta39:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta40:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta41:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta42:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:beta43:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc10:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc11:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc5:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc6:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc7:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc8:*:*:*:*:*:*
cpe:2.3:a:misskey:misskey:13.0.0:rc9:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

Type Values Removed Values Added
First Time appeared Misskey
Misskey misskey
Vendors & Products Misskey
Misskey misskey
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title misskey.js's export data contains private post data
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 7.1, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Dec 16, 2025, 3:09 PM
Reserved
Nov 28, 2025, 11:33 PM
Status
Analyzed
Published
Dec 16, 2025, 12:16 AM
Modified
Oct 14, 2026, 1:10 PM