CVE-2019-20374 describes a critical mutation cross-site scripting (XSS) vulnerability in Typora through versions 0.9.9.31.2 on macOS and 0.9.81 on Linux, affecting Apple and Linux operating systems. This flaw allows for remote code execution (RCE) via malicious Mermaid code blocks due to improper HTML sanitization, leveraging Typora's Electron framework in an unsandboxed environment. With a CVSS score of 9.6 (CRITICAL), exploitation requires user interaction to open a crafted file, but successful execution grants full impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.9.81CPE matchmatch criteria | cpe:2.3:a:typora:typora:*:*:*:*:*:*:*:* | ||
<= 0.9.9.31.2CPE matchmatch criteria | cpe:2.3:a:typora:typora:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.