What is the CVSS score of CVE-2019-12173?

CVE-2019-12173 has a CVSS 3.0 base score of 8.8 (High). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 3.8%.

Is there a public PoC exploit available for CVE-2019-12173?

Yes, a public proof-of-concept exploit is available for CVE-2019-12173. Prioritise patching immediately. EPSS: 3.8%.

Macdown CVE-2019-12173

HIGH

Path Traversal (CWE-22)

2019-05-18 cve@mitre.org

Path Traversal RCE Macdown

8.8

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

May 18, 2019 - 00:29 nvd

HIGH 8.8

DescriptionNVD

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.

AnalysisAI

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. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. 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. Affected products include: Macdown Project Macdown.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.