CVE-2025-66402CWE-862broken-access-control

CVE-2025-66402

Medium · published December 16, 2025

CVSS v3.1
6.5
EPSS
0%
Percentile
23.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00314 · 23.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2025-12-16T05:16Z
Affected products (37)
ProductVersionsFixed in
misskey/misskey≥ 13.1.0, < 2025.12.02025.12.0
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References (3)
https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b · [email protected]https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3 · [email protected]https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 DEC 23:09Z
    misskey.js's export data contains private post data
    cvelistv5