Description
Misskey is a decentralized microblogging platform. In versions of Misskey prior to 12.51.0, malicious actors can use the web client built-in dialog to display a malicious string, leading to cross-site scripting (XSS). XSS could compromise the API request token. This issue has been fixed in version 12.51.0. There are no known workarounds aside from upgrading.
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_confirm
https://github.com/misskey-dev/misskey/security/advisories/GHSA-pmmv-jwqh-f5ww
Patch, Third Party Advisory x_refsource_misc
https://github.com/misskey-dev/misskey/commit/ec203f7f795766f76b55fecc9248168c1cdf6c99
Scores
CVSS v3
8.0
EPSS
0.0032
EPSS Percentile
55.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-79
Status
published
Products (1)
misskey/misskey
< 12.51.0
Published
Aug 27, 2021
Tracked Since
Feb 18, 2026