TI-2025-36147 Aliases CVE-2025-58358 GHSA-45qj-4xq3-3c45

Markdownify is vulnerable to command injection through pptx-to-markdown tool

HIGH 68CWE-77Published 2025-09-04 · Updated 2025-09-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: High
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-77.

Summary

Markdownify is a Model Context Protocol server for converting almost anything to Markdown. Versions below 0.0.2 contain a command injection vulnerability, caused by the unsanitized use of input parameters within a call to child_process.exec, enabling an attacker to inject arbitrary system commands. Successful exploitation can lead to remote code execution under the server process's privileges. The server constructs and executes shell commands using unvalidated user input directly within command-line strings. This introduces the possibility of shell metacharacter injection (|, >, &&, etc.). This issue is fixed in version 0.0.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00965 61st percentileScored 2026-11-07

Fix Fixed markdownify-mcp (zcaceres): 0.0.2mcp-markdownify-server (npm): 0.0.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
zcaceres	markdownify-mcp	before 0.0.2	0.0.2	Patch available	CNA
—	mcp-markdownify-server (npm)	before 0.0.2	0.0.2	Patch available	GHSA-45qj-4xq3-3c45

markdownify-mcp Vendorzcaceres Affected before 0.0.2 Fixed in 0.0.2 Patch available CNA
mcp-markdownify-server (npm) Vendor— Affected before 0.0.2 Fixed in 0.0.2 Patch available GHSA-45qj-4xq3-3c45

Remediation

Fix · CNA markdownify-mcp (zcaceres) Fixed in 0.0.2
Fix · GHSA-45qj-4xq3-3c45 mcp-markdownify-server (npm) Fixed in 0.0.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-58358
2026-10-03 Alias added: GHSA-45qj-4xq3-3c45

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-58358

Other 3

TI-2025-40381 fetch-mcp v1.0.2 and before is vulnerable to Server-Side Request Forgery (SSRF)… CVSS 3.1HIGH 7.5
TI-2025-40380 A Server-Side Request Forgery (SSRF) vulnerability was discovered in the… CVSS 3.1HIGH 7.5
TI-2026-12394 zcaceres markdownify-mcp webpage-to-markdown Markdownify.ts saveToTempFile random values CVSS 4.0LOW 2.0
TI-2026-12391 zcaceres markdownify-mcp Markdownify.ts assertPathAllowed symlink CVSS 4.0MEDIUM 4.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences