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CVE-2021-47839

HIGH

7.2

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.

CVE Details

CVSS v3.1 Score7.2

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/16/2026

Last Modified1/26/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-79

References

https://github.com/vesparny/marky(disclosure@vulncheck.com)

https://imgur.com/a/qclfrUx(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/49831(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/marky-persistent-cross-site-scripting(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/marky-persistent-cross-site-scripting(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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