What is CVE-2026-11422?

CVE-2026-11422 is a high-severity vulnerability in Shd101wyy Crossnote, classified under Eval Injection. CVSS score: 7.1/10. Published 2026-06-05.

How severe is CVE-2026-11422?

High severity. CVSS v3 base score is 7.1 out of 10.

RCE in Shd101wyy Crossnote

CVE-2026-11422

Markdown Preview Enhanced 0.8.x with crossnote engine 0.9.28 contains a code injection vulnerability in the WaveDrom rendering pipeline that allows attackers to execute arbitrary JavaScript by embedding malicious content in a wavedrom fenc…

EPSS: 0.002 (5.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Shd101wyy Crossnote — versions 0
Shd101wyy Markdown Preview Enhanced — versions 0

Weakness classification (CWE)

CWE-95 — Eval Injection

References

disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (issue-tracking, technical-description)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-11422?: CVE-2026-11422 is a high-severity vulnerability in Shd101wyy Crossnote, classified under Eval Injection. CVSS score: 7.1/10. Published 2026-06-05.
How severe is CVE-2026-11422?: High severity. CVSS v3 base score is 7.1 out of 10.