CVE-2021-47838

Summary

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.

Affected Software

Weaknesses

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://www.vulncheck.com/advisories/markright-persistent-cross-site-scripting

References

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

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