EUVD-2026-58499
GHSA-q7c4-ghwq-63xh
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable via LuCI with a low-privileged account (PR:L) and low complexity; container-to-host root escape crosses a security boundary (S:C) with full C/I/A loss.
Primary rating from Vendor (vulncheck).
CVSS VectorVendor: vulncheck
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Privilege escalation to root in luci-app-lxc, the LXC container management app for OpenWrt's LuCI web interface, allows low-privileged authenticated users to reach backend container-management routes they should not be authorized for due to an ACL inconsistency, then abuse a path-traversal flaw in the lxc_name parameter to hijack host-side container hooks. Chaining the authorization gap with the traversal yields arbitrary code execution as root on the OpenWrt host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid but low-privileged authenticated LuCI user account (CVSS PR:L) and network reachability to the LuCI web interface, plus the target host must have luci-app-lxc installed and be using LXC containers whose start is driven through the lxc.hook.start-host hook. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high-priority issue, not an inflated CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Patch available per vendor advisory: upgrade luci-app-lxc to the fixed release identified in the OpenWrt LuCI GitHub security advisory GHSA-jf59-v86x-fwf2 (https://github.com/openwrt/luci/security/advisories/GHSA-jf59-v86x-fwf2); an exact fixed version number is not present in the provided data, so confirm the patched package version against that advisory and the VulnCheck advisory (https://www.vulncheck.com/advisories/openwrt-luci-app-lxc-acl-inconsistency-authentication-bypass) before validating. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory OpenWrt devices running luci-app-lxc and its current version, restrict network access to the LuCI web interface to trusted administrative networks only, and disable the luci-app-lxc component if container management is not operationally required. …
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Same weakness CWE-73 – External Control of File Name or Path
View allSame technique Path Traversal
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External POC / Exploit Code
Leaving vuln.today