CVE-2021-47836
Markdown Explorer 0.1.1 - Persistent Cross-Site Scripting
- State
- Published
- Severity
- 5.1 Medium
- Published
- Jan 16, 2026
- Updated
- May 25, 2026
- Reserved
- Jan 14, 2026
Description
Markdown Explorer 0.1.1 contains a cross-site scripting vulnerability that allows attackers to inject malicious code through file uploads and editor inputs. Attackers can upload markdown files with embedded JavaScript payloads that execute in the application's privileged renderer context, allowing code execution on the host.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 |
|---|---|
Markdown Explorerjersou |
|
References
- ExploitDB-49826exploit
- Markdown Explorer GitHub Repositoryproduct
- Proof of Concept Videoexploit
- VulnCheck Advisory: Markdown Explorer 0.1.1 - Persistent Cross-Site Scriptingthird-party-advisory
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