PT-2026-33368 · Unknown · Mcp-Framework
CVE-2026-39313
·
Published
2026-04-16
·
Updated
2026-04-17
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
mcp-framework versions prior to 0.2.22
Description
The
readRequestBody() function in the HTTP transport concatenates request body chunks into a string without enforcing a size limit. Although a maxMessageSize configuration value exists, it is not applied within the readRequestBody() function. A remote unauthenticated attacker can cause memory exhaustion and a denial of service, crashing the server by sending a single large POST request to the '/mcp' endpoint.Recommendations
Update to version 0.2.22.
Exploit
Fix
Allocation of Resources Without Limits
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Weakness Enumeration
Related Identifiers
Affected Products
Mcp-Framework