CVE-2019-20374
moderate-risk
Published 2020-01-09
A mutation cross-site scripting (XSS) issue in Typora through 0.9.9.31.2 on macOS and through 0.9.81 on Linux leads to Remote Code Execution through Mermaid code blocks. To exploit this vulnerability, one must open a file in Typora. The XSS vulnerability is then triggered due to improper HTML sanitization. Given that the application is based on the Electron framework, the XSS leads to remote code execution in an unsandboxed environment.
Do I need to act?
~
2.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.6/10
Critical
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (4)
Third Party Advisory
https://github.com/typora/typora-issues/issues/3124
Third Party Advisory
https://github.com/typora/typora-issues/issues/3124
42
/ 100
moderate-risk
Severity
32/34 · Critical
Exploitability
5/34 · Minimal
Exposure
5/34 · Minimal