CVE-2026-58652

luci-app-travelmate (and the travelmate package) contain a privilege-escalation flaw: a LuCI/rpcd session holding the luci-app-travelmate write ACL is granted config-wide UCI write access to the travelmate configuration. While the LuCI UI restricts the auto-login script picker to /etc/travelmate/*.login, this is only a frontend restriction. The backend travelmate service (running as root) reads the raw UCI 'script' and 'script_args' values and executes the configured path when the captive-portal auto-login branch (f_check() in travelmate-functions.sh) is reached. An attacker with delegated write permissions can set script to /bin/sh and script_args to attacker-controlled arguments, resulting in arbitrary command execution as root. Confirmed in luci-app-travelmate/travelmate 2.4.5-r3; the sink is still present in travelmate 2.4.6-1 and no patched version is known.

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

• https://github.com/openwrt/luci/commit/0627b412ee3a760cc4bca9fc8a5b73de8f33ac10
• https://github.com/openwrt/luci/commit/491f1df06645c4e0757fed4a9f0622e9ce0d300c
• https://github.com/openwrt/luci/commit/71d92bcc9edbc8f95858ce82a8ff5d52500005a2
• https://github.com/openwrt/luci/commit/d6e457a1a70a9010195edeafdc0b8eb6e3b0f7f1
• https://github.com/openwrt/luci/commit/f85102548ee8325bfd581a0327b210b5f7670829
• https://github.com/openwrt/luci/security/advisories/GHSA-p35r-3323-6g7g
• https://www.vulncheck.com/advisories/luci-app-travelmate-arbitrary-command-execution-via-uci-script-parameter