CVE•Published 2026-06-05•Modified 2026-06-05•1 article on news•4 live references•NVD data
CVE-2026-49493
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS percentile
—
Weaknesses (CWE)
Description
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 malicious bitfield code block executes attacker-controlled code on the server side when the document is rendered or exported. Fixed in 0.8.28 by parsing bitfield register definitions with JSON5.parse(), since they are purely data.
Timeline
Published 2026-06-05
Modified 2026-06-05
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-49493Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-49493Censys host search filtered to this CVE id.
grep.app
CVE-2026-49493Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-49493GitHub code search for direct mentions.
Google dork
"CVE-2026-49493" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.