XSS in Moeditor
CVE-2021-47840
Moeditor 0.2.0 contains a persistent cross-site scripting vulnerability that allows attackers to store malicious payloads within markdown files. Attackers can upload specially crafted markdown files with embedded JavaScript that execute when opened, potentially enabling remote code execution on the victim's system.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.004 (34.9th 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
- Moeditor — versions 0.2.0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47840?
- CVE-2021-47840 is a high-severity vulnerability in Moeditor, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-01-16.
- How severe is CVE-2021-47840?
- High severity. CVSS v3 base score is 7.2 out of 10.