CVE-2026-72842
OpenWrt luci-app-lxc ACL Inconsistency Authentication Bypass
- State
- Published
- Severity
- 9.4 Critical
- Published
- Aug 13, 2026
- Updated
- Sep 30, 2026
- Reserved
- Aug 10, 2026
Description
luci-app-lxc contains an ACL inconsistency vulnerability that allows low-privileged authenticated LuCI users to access backend container management routes without proper authorization checks. Attackers can exploit path traversal via `/.%2E` in the `lxc_name` parameter to escape container directories and control host-side scripts executed through `lxc.hook.start-host`, achieving root code execution on the OpenWrt host.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.4 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | VulnCheck |
| 3.1 | 9.9 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-73 External Control of File Name or Path
Affected Products
| Product | Versions |
|---|---|
luciopenwrt |
|
References
- GitHub Security Advisory (GHSA-jf59-v86x-fwf2)vendor-advisory
- VulnCheck Advisory: OpenWrt luci-app-lxc ACL Inconsistency Authentication Bypassthird-party-advisory
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