CVE-2026-64262

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: end fusereq on io-uring cancel task work When iouring delivers task work with tw.cancel set PFEXITING, PFKTHREAD fallback, or percpurefisdying on the ring context, fuseuringsendintask takes the cancel branch, assigns...

MCP Python SDK: Experimental task handlers allow any client to access and cancel other clients' tasks

SummaryIn affected versions, the default request handlers installed by the experimental tasks feature server.experimental.enabletasks did not check which session created a task before acting on it. On a server with more than one connected client, any client could observe, read results from, and...

PYSEC-2026-3481 MCP Python SDK: Experimental task handlers allow any client to access and cancel other clients' tasks

Summary In affected versions, the default request handlers installed by the experimental tasks feature server.experimental.enabletasks did not check which session created a task before acting on it. On a server with more than one connected client, any client could observe, read results from, and...

CVE-2026-47391

PraisonAI’s first-party A2A example exposes an unauthenticated /a2a JSON-RPC surface and registers a calculate(expression) tool implemented via Python eval(), bound to 0.0.0.0. A remote attacker can send message/send to a2a, causing the LLM to invoke the unsafe tool and potentially execute arbitr...

CVE-2026-47391 PraisonAI's unauthenticated A2A official example can reach real LLM-driven `eval()` tool execution

PraisonAI is a multi-agent teams system. Prior to version 4.6.40, PraisonAI's first-party A2A server example exposes an unauthenticated A2A JSON-RPC endpoint and registers a calculateexpression tool implemented with Python eval. The example also binds to 0.0.0.0. A remote unauthenticated attacker...

CVE-2026-47391 PraisonAI's unauthenticated A2A official example can reach real LLM-driven `eval()` tool execution

PraisonAI is a multi-agent teams system. Prior to version 4.6.40, PraisonAI's first-party A2A server example exposes an unauthenticated A2A JSON-RPC endpoint and registers a calculateexpression tool implemented with Python eval. The example also binds to 0.0.0.0. A remote unauthenticated attacker...

MCP Python SDK: Experimental task handlers allow any client to access and cancel other clients' tasks

Summary In affected versions, the default request handlers installed by the experimental tasks feature server.experimental.enabletasks did not check which session created a task before acting on it. On a server with more than one connected client, any client could observe, read results from, and...

PT-2026-60666

Summary In affected versions, the default request handlers installed by the experimental tasks feature server.experimental.enable tasks did not check which session created a task before acting on it. On a server with more than one connected client, any client could observe, read results from, and...

CVE-2026-52870

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.enabletasks for tasks/list, tasks/get, tasks/result, and tasks/cancel operate only on task identifiers without recordin...

CVE-2026-52870

The MCP Python SDK (package mcp on PyPI) has a vulnerability in versions 1.23.0–1.27.1 where default handlers installed by server.experimental.enable_tasks() for tasks/list, tasks/get, tasks/result, and tasks/cancel only operate on task identifiers and do not record the session that created each ...

CVE-2026-52870 MCP Python SDK: Experimental task handlers allow any client to access and cancel other clients' tasks

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.enabletasks for tasks/list, tasks/get, tasks/result, and tasks/cancel operate only on task identifiers without recordin...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the failure to cancel the mloscanstartwk task. This vulnerability may lead to queuing after...

CVE-2023-53638

Technical details for CVE-2023-53638 are not publicly available in the provided documents. Monitor for updates from official advisories.

CVE-2023-53638 octeon_ep: cancel queued works in probe error path

In the Linux kernel, the following vulnerability has been resolved: octeonep: cancel queued works in probe error path If it fails to get the devices's MAC address, octepprobe exits while leaving the delayed work intrpolltask queued. When the work later runs, it's a use after free. Move the...

PT-2025-41082

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a use-after-free issue in the octep probe function. If the function fails to retrieve a device's MAC address, it exits while leaving a delayed work item, intr...

CVE-2025-38114

In the Linux kernel, the following vulnerability has been resolved: e1000: Move cancelworksync to avoid deadlock Previously, e1000down called cancelworksync for the e1000 reset task via e1000downandstop, which takes RTNL. As reported by users and syzbot, a deadlock is possible in the following...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a failed EXITING task cancelation in the iouring module...

SUSE CVE-2021-46942

In the Linux kernel, the following vulnerability has been resolved: iouring: fix shared sqpoll cancellation hangs 736.982891 INFO: task iou-sqp-4294:4295 blocked for more than 122 seconds. 736.982897 Call Trace: 736.982901 schedule+0x68/0xe0 736.982903 iouringcancelsqpoll+0xdb/0x110 736.982908...

PT-2017-16584

Name of the Vulnerable Software and Affected Versions Citrix XenServer versions through 7.0 Description An issue was discovered in Linux Foundation xapi in Citrix XenServer, where an authenticated read-only administrator can cancel tasks of other administrators. Recommendations For versions throu...

CVE-2017-5573: Undefined Security Weakness

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can cancel tasks of other administrators...