Vulnerability · Published Aug 13, 2026 · Assigned by VulnCheck
CVE-2026-72841luci-app-openvpn Path Traversal RCE via instance_name2
Critical 9.9
In plain English
A critical-severity security flaw in luci from openwrt. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.6%top 50.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
luci-app-openvpn fails to properly validate the instance_name2 parameter during file upload, allowing authenticated users to perform path traversal and write arbitrary files outside the intended directory. Attackers can upload malicious payloads to gain persistent root code execution by placing SSH keys in system directories accessible on reboot.
Affected products (as reported)
Weakness: CWE-73 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-jjcx-c284-2qv8) vendor-advisory
- VulnCheck Advisory: luci-app-openvpn Path Traversal RCE via instance_name2 third-party-advisory