CVE-2026-10280Public exploitNetwork attack vector

SSRF via unrestricted MCP server URL

Published Jun 1, 2026 · Updated Jun 1, 2026

Server-side request forgery in horizon921 MCPilot 0.1.0 allows remote attackers to reach internal services through the MCP API call route. The route trusts serverBaseUrl from the request body, probes derived schema and tool URLs, and posts a tool call without restricting the scheme, host, port, loopback, or private addresses. Exploitation requires access to /api/mcp/call and server egress to the chosen target; reachable services can disclose data or accept attacker-selected POST requests.

CVSS severityUnavailable
Unscored
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Server-side request forgery in horizon921 MCPilot 0.1.0 allows remote attackers to reach internal services through the MCP API call route. The route trusts serverBaseUrl from the request body, probes derived schema and tool URLs, and posts a tool call without restricting the scheme, host, port, loopback, or private addresses. Exploitation requires access to /api/mcp/call and server egress to the chosen target; reachable services can disclose data or accept attacker-selected POST requests.

The record

CVE
CVE-2026-10280
Published
Jun 1, 2026
Updated
Jun 1, 2026
Vendor
horizon921
Product
MCPilot
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

horizon921 · MCPilotversion=0.1.0

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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