High severityOSV Advisory· Published Dec 15, 2025· Updated Dec 16, 2025
misskey.js's export data contains private post data
CVE-2025-66402
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
misskey-jsnpm | >= 13.0.0-beta.16, < 2025.12.0 | 2025.12.0 |
Affected products
2- Range: 0.0.5018, 0.0.5023, 0.0.5030, …
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-496g-mmpw-j9x3ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-66402ghsaADVISORY
- github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57bghsax_refsource_MISCWEB
- github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3ghsax_refsource_CONFIRMWEB
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