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Description

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.

PUBLISHED Reserved 2026-01-14 | Published 2026-01-16 | Updated 2026-01-16 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

0.2.0
affected

Credits

TaurusOmar finder

References

www.vulncheck.com/...oeditor-persistent-cross-site-scripting exploit

www.exploit-db.com/exploits/49830 (ExploitDB-49830) exploit

moeditor.js.org/ (Moeditor Official Homepage) product

imgur.com/a/UdP4JaX (Proof of Concept Video) product

www.vulncheck.com/...oeditor-persistent-cross-site-scripting (VulnCheck Advisory: Moeditor 0.2.0 - Persistent Cross-Site Scripting) third-party-advisory

cve.org (CVE-2021-47840)

nvd.nist.gov (CVE-2021-47840)

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