CVE-2021-47838
Markright 1.0 - Persistent Cross-Site Scripting
- State
- Published
- Severity
- 5.1 Medium
- Published
- Jan 16, 2026
- Updated
- Jan 16, 2026
- Reserved
- Jan 14, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | 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 | VulnCheck |
| 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Markrightdvcrn |
|
References
- ExploitDB-49834exploit
- Markright GitHub Repositoryproduct
- Proof of Concept Videoexploit
- VulnCheck Advisory: Markright 1.0 - Persistent Cross-Site Scriptingthird-party-advisory
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