Cross-site scripting in Misskey - #VU128326
Published: June 10, 2019 / Updated: April 28, 2026
Vulnerability identifier: #VU128326
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Misskey Development Division
Affected software:
Misskey
Misskey
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to cross-site scripting in the authorization page for third-party application authentication when processing a crafted application name in the app authentication form. A remote attacker can trick the victim into visiting a generated URL to disclose sensitive information.
User interaction is required to visit the generated URL.
Remediation
Install security update from vendor's website.