CVE-2026-108395 Model Context Protocol Java SDK - Denial of Service

Model Context Protocol Java SDK 0.8.0 through 0.12.0 (mcp), 0.13.0 through 0.18.3 and 1.0.0 through 1.1.3 (mcp-core), and 2.0.0-M1 through 2.0.0 (mcp-core) contains a denial of service caused by unbounded HTTP request body reading in Servlet-based SSE, Streamable HTTP, and Stateless server transports, letting unauthenticated remote clients exhaust server heap memory, exploit requires network access to affected transports.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-770

Vendor fix

Update to versions 0.18.4, 1.1.4, or 2.0.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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