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CVE Vulnerability Details :
CVE-2025-66402
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-15 Dec, 2025 | 23:09
Updated At-16 Dec, 2025 | 15:09
Rejected At-
▼CVE Numbering Authority (CNA)
misskey.js's export data contains private post data

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.

Affected Products
Vendor
misskey-dev
Product
misskey
Versions
Affected
  • >= 13.0.0-beta.16, < 2025.12.0
Problem Types
TypeCWE IDDescription
CWECWE-862CWE-862: Missing Authorization
Type: CWE
CWE ID: CWE-862
Description: CWE-862: Missing Authorization
Metrics
VersionBase scoreBase severityVector
4.07.1HIGH
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
Version: 4.0
Base score: 7.1
Base severity: HIGH
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3
x_refsource_CONFIRM
https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b
x_refsource_MISC
Hyperlink: https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3
exploit
Hyperlink: https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3
Resource:
exploit
Details not found