https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-10T22:09:40.692950+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2026-52870 CVE-2026-52870 — MCP Python SDK: Experimental task handlers allow any client to access and cancel other clients' tasks 2026-10-10T22:09:40.709346+00:00

Affected: modelcontextprotocol python-sdk

The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol (MCP). From 1.23.0 until 1.27.2, default handlers installed by server.experimental.enable_tasks() for tasks/list, tasks/get, tasks/result, and tasks/cancel operate only on task identifiers without recording the session that created each task, allowing any connected client to enumerate, read results from, consume messages for, or cancel other clients' tasks. This issue is fixed in version 1.27.2.