by Kastro
Paper/Archive/CVE-2026-72841

CVE-2026-72841

openwrt luci — luci-app-openvpn Path Traversal RCE via instance_name2

EPSS 0.6%public exploitCVSS 9.9
critical.is priorityof 100
50
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 49.4.494 × 209.9Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
luci< 24.10.724.10.7CNA
luci25.12.0 – < 25.12.425.12.4CNA

Scores by source

VulnCheck (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
VulnCheck (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/openwrt/luci/security/advisories/GHSA-jjcx-c284-2qv8writeupvulncheck.com/advisories/luci-app-openvpn-path-traversal-rce-via-instance-name2