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Home / CVE DB / CVE-2026-34237
Standard
Vulnerability Identifier

CVE-2026-34237

2026-03-31
Severity Assessment
6.1
MEDIUM
CVSS v3.x Score
Clinical Analysis (Description)

MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 1.0.1 and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 1.0.1 and 1.1.1.

Vector Sequencing

Attack Parameters

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Impact Consequences

Technical Impact

Changed
Scope
Low
Confidentiality
Low
Integrity
None
Availability
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Classification

CWE-CWE-942

View CWE Details ↗
Affected Population

Affected Configurations

Total: 1 detected entries

Software List Scrollable
lf
mcp_java_sdk
Vendor: lfprojects • v1.1.0
Timeline

Time Line

PUBLICATION
31 Mar 2026
MODIFICATION
03 Apr 2026
FIRST PATCH
21 Apr 2026
Impact Statistics

Key Metrics

CVSS Score
6.1
MEDIUM
Products
1
Affected
Patches
1
Available
Remediation Protocol

Recommended Solution

No automatic solution found. Check vendor references.
Patch Library
Oracle Critical Patch Update Advisory - April 2026
DL
Recommended Actions for Administrators

Immediate Action Plan

1. Inventory

Identify all affected systems in your infrastructure.

2. Assessment

Assess exposure and criticality for your organization.

3. Mitigation

Apply patches or available workarounds.

4. Verification

Test and confirm effectiveness of applied measures.

Sources & Bibliography
NIST NVD MITRE CVE External Reference ↗ External Reference ↗ External Reference ↗