What is CVE-2026-72841?

CVE-2026-72841 is a critical-severity vulnerability in Openwrt Luci, classified under External Control of File Name or Path. CVSS score: 9.9/10. Published 2026-08-13.

How severe is CVE-2026-72841?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Openwrt Luci

CVE-2026-72841

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.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Openwrt Luci

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-72841?: CVE-2026-72841 is a critical-severity vulnerability in Openwrt Luci, classified under External Control of File Name or Path. CVSS score: 9.9/10. Published 2026-08-13.
How severe is CVE-2026-72841?: Critical severity. CVSS v3 base score is 9.9 out of 10.