Is there a public PoC exploit available for CVE-2025-11287?

Yes, a public proof-of-concept exploit is available for CVE-2025-11287. Prioritise patching immediately. EPSS: 0.2%.

MCPHub CVE-2025-11287

Q: What is the CVSS score of CVE-2025-11287?

CVE-2025-11287 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.2%.

MEDIUM

Improper Authentication (CWE-287)

2025-10-05 cna@vuldb.com

Authentication Bypass Mcphub Mcphubx

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vuln.today AI

7.3 HIGH

Network vector, no privileges or user interaction, low impacts on confidentiality, integrity, and availability.

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

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Jul 26, 2026 - 19:06 vuln.today

CVE Published

Oct 05, 2025 - 07:15 cve.org

MEDIUM 5.5

DescriptionCVE.org

A vulnerability was identified in samanhappy MCPHub up to 0.9.10. This vulnerability affects the function handleSseConnectionfunction of the file src/services/sseService.ts. Such manipulation leads to improper authentication. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Improper authentication in MCPHub up to version 0.9.10 allows remote attackers to bypass authentication on the SSE connection handler. No active exploitation has been reported in CISA KEV, but public exploit code is available. EPSS 0.20% indicates low likelihood of widespread exploitation despite the public PoC.

Technical ContextAI

The vulnerability resides in the handleSseConnectionfunction of src/services/sseService.ts, which manages Server-Sent Events (SSE) connections in MCPHub. CWE-287 (Improper Authentication) indicates that the function fails to properly verify caller identity before establishing an SSE stream. The affected product is identified by CPE cpe:2.3:a:mcphubx:mcphub:*:*:*:*:*:*:*:* up to version 0.9.10, confirming the vendor and version scope.

RemediationAI

No vendor-released patch exists. Mitigations include disabling the SSE endpoint if not essential, placing a reverse proxy with authentication in front of MCPHub, or blocking external access to the service via firewall rules. Note that disabling SSE will break real-time event streaming functionality, and reverse proxy authentication adds operational complexity.