Cross-site scripting in Misskey - CVE-2019-1020010
Published: June 10, 2019 / Updated: April 28, 2026
Vulnerability identifier: #VU128326
CSH Severity: Medium
CVSS v4: 5.1 [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]
CVE-ID: CVE-2019-1020010
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Misskey
How to mitigate CVE-2019-1020010
Install security update from vendor's website.
Misskey - update to 11.20.2