XSS in Vesparny Marky
CVE-2021-47839
Marky 0.0.1 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts into markdown files. Attackers can upload crafted markdown files with embedded JavaScript payloads that execute when the…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.004 (33.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Vesparny Marky — versions 0.0.1
Weakness classification (CWE)
References
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (third-party-advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2021-47839?
- CVE-2021-47839 is a high-severity vulnerability in Vesparny Marky, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-01-16.
- How severe is CVE-2021-47839?
- High severity. CVSS v3 base score is 7.2 out of 10.