CVE-2021-47838 MEDIUM

CVE-2021-47838: Markright 1.0 - Persistent Cross-Site Scripting

Vendor Dvcrn
Product Markright
Weakness CWE-79 · XSS
Published January 16, 2026
Last update January 16, 2026

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

Markright 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to embed malicious payloads in markdown files. Attackers can upload specially crafted markdown files that execute arbitrary JavaScript when opened, potentially enabling remote code execution on the victim's system.

Key dates

02Disclosure timeline

January 16, 2026 CVE published
January 16, 2026 Record updated