CVE-2021-47838

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.

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/dvcrn/markright
https://imgur.com/a/VOsgKbZ
https://www.exploit-db.com/exploits/49834
https://www.vulncheck.com/advisories/markright-persistent-cross-site-scripting
https://www.vulncheck.com/advisories/markright-persistent-cross-site-scripting

Configurations

No configuration.

History

No history.

Information

Published : 2026-01-16 19:16

Updated : 2026-01-26 15:05

NVD link : CVE-2021-47838

Mitre link : CVE-2021-47838

CVE.ORG link : CVE-2021-47838

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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