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CVE-2026-105429— NetBird client SSH config Match line injection via peer FQDN or hostname allows local command execution

一分钟漏洞结论

影响对象
NetBird NetBird
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。

Improper neutralization of special elements in the NetBird client SSH configuration manager (client/ssh/config/manager.go) in NetBird versions 0.60.0 through 0.74.6 allows a malicious or compromised peer to execute arbitrary commands on other NetBird client ho

CVSS 8.0 · High
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一、 漏洞 CVE-2026-105429 基础信息

漏洞信息

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Vulnerability Title
NetBird client SSH config Match line injection via peer FQDN or hostname allows local command execution
来源: CVE Program / CVE List V5
Vulnerability Description
Improper neutralization of special elements in the NetBird client SSH configuration manager (client/ssh/config/manager.go) in NetBird versions 0.60.0 through 0.74.6 allows a malicious or compromised peer to execute arbitrary commands on other NetBird client hosts. The client writes a system-wide OpenSSH drop-in file (/etc/ssh/ssh_config.d/99-netbird.conf, or the equivalent under %PROGRAMDATA%\ssh\ssh_config.d on Windows) that embeds each peer FQDN or hostname inside a double-quoted Match host directive without escaping. A peer name containing a double quote breaks out of the quoted context and injects arbitrary SSH configuration directives, including exec commands, which run locally as any user on the host the next time that user runs ssh. Desktop clients on Linux, macOS, Windows and FreeBSD are affected; the Android and iOS apps are not. The issue is fixed in version 0.74.7, which accepts a peer FQDN or hostname only if it is a valid DNS name.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
NetBird NetBird 0.60.0 ~ 0.74.7 cpe:2.3:a:netbird:netbird:*:*:*:*:*:*:*:*

二、漏洞 CVE-2026-105429 的公开POC

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三、漏洞 CVE-2026-105429 的情报信息

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CVE-2026-105429 其他参考 (3)

IV. Related Vulnerabilities

Same product: NetBird
Same weakness: CWE-78

V. Comments for CVE-2026-105429

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