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CVE-2026-72842

OpenWrt luci-app-lxc ACL Inconsistency Authentication Bypass

CVSS 4.0 9.4 CRITICALCVSS 3.1 9.9 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-72842

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-72842

Published

luci

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "openwrt",
                    "product": "luci",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThanOrEqual": "24.10.8"
                        },
                        {
                            "version": "25.12.0",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThanOrEqual": "25.12.5"
                        }
                    ],
                    "modules": [
                        "luci-app-lxc"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON