CVE-2021-47838

EUVD-2026-2901
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
VulnCheckCNA
7.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 9%
Common Weakness Enumeration
References
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