CVE-2026-63349— AnyIO进程管理忽略额外组致权限保留漏洞
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. In 4.14.0, AnyIO accepts the POSIX extra_groups argument in anyio.run_process() and anyio.open_process(), but open_process() forwards the group
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一、 漏洞 CVE-2026-63349 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
AnyIO run_process/open_process ignores extra_groups and can retain parent supplementary groups
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. In 4.14.0, AnyIO accepts the POSIX extra_groups argument in anyio.run_process() and anyio.open_process(), but open_process() forwards the group argument to the backend instead of extra_groups. A caller that supplies extra_groups=[] to clear inherited supplementary groups can therefore launch a child that retains the parent process groups, undermining a privilege-dropping boundary. If group is also supplied, the integer group value is passed where an iterable of supplementary groups is expected and the launch can fail with TypeError. This issue affects POSIX applications that rely on AnyIO subprocess helpers to launch less-privileged child processes. This issue is fixed in version 4.14.2.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-63349 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-63349 补丁与修复 (2)
CVE-2026-63349 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-2026-63349
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