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archive/Patch now/AIR-2025-0481
closedclosed 15 Sep 2025Patch now2 Disclosed vulnerabilityAI

CVE-2025-59155: hackmd-mcp server-side request forgery vulnerability

hackmd-mcp

The hackmd-mcp Model Context Protocol server contains an SSRF flaw when running in HTTP transport mode due to missing input validation. Attackers can redirect outbound API requests to internal network endpoints and bypass security controls.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
6.9
EPSS
<0.01 · top 71% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
15 Sep 2025
last update
15 Sep 2025
CVE ids
CVE-2025-59155other records

Timeline · 1

  1. 15 Sep 2025CVE-2025-59155: hackmd-mcp is a Model Context Protocol server for integrating HackMD's note-taking platform with AI assistants.

Sources · 1

Advisories and databases

  1. 2025-09-15
    CVE-2025-59155: hackmd-mcp is a Model Context Protocol server for integrating HackMD's note-taking platform with AI assistants.
    NVD · nvd.nist.gov/vuln/detail/CVE-2025-59155

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
ssrfmcp-server
dates
happened 15 Sep 2025 · first reported 15 Sep 2025
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2025-59155: hackmd-mcp server-side request forgery vulnerability

https://gcdradar.vercel.app/incidents/cve-2025-59155-hackmd-mcp-server-side-request-forgery-vulner · AIR-2025-0481 · closed 2025-09-15

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2025-09-15
- AI role: Attack on AI
- Products: hackmd-mcp
- CVE ids: CVE-2025-59155
- CVSS: 6.9

## Summary

The hackmd-mcp Model Context Protocol server contains an SSRF flaw when running in HTTP transport mode due to missing input validation. Attackers can redirect outbound API requests to internal network endpoints and bypass security controls.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2025-09-15: CVE-2025-59155: hackmd-mcp is a Model Context Protocol server for integrating HackMD's note-taking platform with AI assistants. (https://nvd.nist.gov/vuln/detail/CVE-2025-59155)

## Sources

- 2025-09-15 NVD: CVE-2025-59155: hackmd-mcp is a Model Context Protocol server for integrating HackMD's note-taking platform with AI assistants. https://nvd.nist.gov/vuln/detail/CVE-2025-59155

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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