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TI-2019-09091 Aliases CVE-2019-12173GHSA-r63g-rwmc-75w3

MacDown 0.7.1 (870) allows remote code execution via a file:\\\ URI, with a .app…

Priority MEDIUM 44CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

MacDown 0.7.1 (870) allows remote code execution via a file:\\\ URI, with a .app pathname, in the HREF attribute of an A element. This is different from CVE-2019-12138.

Why it matters now

EPSS 0.0375 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:macdown_project:macdown:0.7.1:*:*:*:*:*:*:*0.7.1VulnerableMacdown Project
  • cpe:2.3:a:macdown_project:macdown:0.7.1:*:*:*:*:*:*:* Versions 0.7.1 Vulnerable ·Macdown Project

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-12173
  2. 2026-10-03 Alias added: GHSA-r63g-rwmc-75w3

References

  • TI-2019-09062 MacDown 0.7.1 allows directory traversal, for execution of arbitrary programs, via a… CVSS 3.0HIGH 7.8

Sources