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CVE-2021-47838

HIGH

7.2

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.17.2

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado1/16/2026

Ultima modificacao1/26/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-79

Referencias

https://github.com/dvcrn/markright(disclosure@vulncheck.com)

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

https://www.exploit-db.com/exploits/49834(disclosure@vulncheck.com)

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

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

Correlacoes IOC

Sem correlacoes registradas

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