CVE-2026-49493
CVE-2026-49493
Markdown Preview Enhanced before 0.8.28 parses Bitfield fenced code blocks with interpretJS(), which evaluates the block content as code via vm.runInNewContext(), allowing arbitrary code execution. A crafted markdown document containing a…
Vulnerability class: RCE (Remote Code Execution)
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-49493?
- CVE-2026-49493 is a high-severity vulnerability, classified under Code Injection. CVSS score: 8.8/10. Published 2026-06-05.
- How severe is CVE-2026-49493?
- High severity. CVSS v3 base score is 8.8 out of 10.