CVE-2021-47839

7.2 HIGH
Published: January 16, 2026 Modified: January 26, 2026
View on NVD

Description

Marky 0.0.1 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts into markdown files. Attackers can upload crafted markdown files with embedded JavaScript payloads that execute when the file is opened, potentially enabling remote code execution.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/vesparny/marky
Source: disclosure@vulncheck.com
https://imgur.com/a/qclfrUx
Source: disclosure@vulncheck.com
https://www.exploit-db.com/exploits/49831
Source: disclosure@vulncheck.com

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.2 / 10.0
EPSS (Exploit Probability)
0.0%
9th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)