CVE-2026-64847— AnyIO进程池未排空标准错误导致阻塞漏洞
一分钟漏洞结论
影响对象
agronholm anyio
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO starts process-pool workers with standard error connected to a pipe that the parent never drains, even though the docume
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一、 漏洞 CVE-2026-64847 基础信息
漏洞信息
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Vulnerability Title
AnyIO process-pool workers can block indefinitely on undrained stderr
来源: CVE Program / CVE List V5
Vulnerability Description
AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO starts process-pool workers with standard error connected to a pipe that the parent never drains, even though the documented behavior redirects all three standard streams. Worker code that writes enough attacker-influenced data to sys.stderr can fill the pipe and block before returning the standard-output protocol response, causing the awaiting process-pool call to remain blocked indefinitely. Applications that run untrusted or faulty worker code capable of producing substantial standard-error output are affected. This issue is fixed in version 4.14.2.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-64847 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
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CVE-2026-64847 补丁与修复 (2)
CVE-2026-64847 其他参考 (2)
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Release 4.14.2 · agronholm/anyio · GitHub x_refsource_MISC
IV. Related Vulnerabilities
Same product: anyio
V. Comments for CVE-2026-64847
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