CVE-2021-39169

CVSS V2 Low 3.5 CVSS V3 Medium 5.4
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.
Overview
  • CVE ID
  • CVE-2021-39169
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-27T13:15:07
  • Last Modified Date
  • 2021-09-08T13:14:55
Weakness Enumerations
CWE URL
CWE-79 http://cwe.mitre.org/data/definitions/79.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:* 1 OR 12.51.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:S/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 3.5
  • Severity
  • LOW
  • Exploitability Score
  • 6.8
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • REQUIRED
  • Scope
  • CHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 5.4
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.3
  • Impact Score
  • 2.7
References
Reference URL Reference Tags
https://github.com/misskey-dev/misskey/security/advisories/GHSA-pmmv-jwqh-f5ww Patch Third Party Advisory
https://github.com/misskey-dev/misskey/commit/ec203f7f795766f76b55fecc9248168c1cdf6c99 Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-39169
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39169
History
Created Old Value New Value Data Type Notes
2022-05-10 16:07:44 Added to TrackCVE
2022-12-05 09:11:24 2021-08-27T13:15Z 2021-08-27T13:15:07 CVE Published Date updated
2022-12-05 09:11:24 2021-09-08T13:14:55 CVE Modified Date updated
2022-12-05 09:11:24 Analyzed Vulnerability Status updated