Critical severity · published Aug 13, 2026
CVE-2026-72842
OpenWrt luci-app-lxc ACL Inconsistency Authentication Bypass
9.9
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LU
luci · openwrt
through 24.10.8; 25.12.0 through 25.12.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72842
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-72842
vendor-advisory
https://github.com/openwrt/luci/security/advisories/GHSA-jf59-v86x-fwf2
third-party-advisory
https://www.vulncheck.com/advisories/openwrt-luci-app-lxc-acl-inconsistency-authentication-bypass
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