CVE-2026-57999

luci-app-tailscale-community - Command Injection via tailscale.do_login RPC

State: Published
Severity: 7.7 High
Published: Jun 29, 2026
Updated: Jul 14, 2026
Reserved: Jun 26, 2026

Description

luci-app-tailscale-community contains a command injection vulnerability in the tailscale.do_login RPC method that allows authenticated users to execute arbitrary commands as root. The vulnerability exists because user-controlled loginserver and loginserver_authkey parameters are improperly quoted within a double-quoted shell command, allowing shell substitutions like $() to be evaluated by the outer shell before argument processing.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
luci-app-tailscale-communityopenwrt	0.11.1 and earlierAffected

References

GitHub Security Advisory (GHSA-xwc5-mx58-rh35)vendor-advisory
VulnCheck Advisory: luci-app-tailscale-community - Command Injection via tailscale.do_login RPCthird-party-advisory

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