CVE-2021-39169CWE-79

XSS vulnerability using dialog

High · published August 27, 2021

CVSS v3.1
8.0
EPSS
1%
Percentile
54.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.0 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00736 · 54.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2021-08-27T12:40Z
EPSS history
Timeline
  • 27 AUG 12:40Z
    XSS vulnerability using dialog
    cvelistv5