CVE-2021-47839

Marky 0.0.1 - Persistent Cross-Site Scripting

Published Jan 16, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Marky Project
Marky Project marky
CPEs cpe:2.3:a:marky_project:marky:0.0.1:*:*:*:*:*:*:*
Vendors & Products Marky Project
Marky Project marky
Type Values Removed Values Added
First Time appeared Vesparny
Vesparny marky
Vendors & Products Vesparny
Vesparny marky
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Marky 0.0.1 - Persistent Cross-Site Scripting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 15, 2026, 1:28 AM
Reserved
Jan 14, 2026, 5:11 PM
Status
Deferred
Published
Jan 16, 2026, 7:16 PM
Modified
Jul 15, 2026, 2:17 AM
Severity
Important
Public date
Jan 16, 2026, 7:09 PM