OPNsense is a FreeBSD based firewall and routing platform.
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the OpenVPN Client Specific Override common_name field accepts path traversal sequences and openvpn_csc_conf_write() concatenates the value into /var/etc/openvpn-csc/<vpnid>/<common_name> without normalization or a basename check. The affected event handlers are client_connect.php and user_pass_verify.php. An authenticated user with Client Specific Override privileges can store the traversal value, and a matching OpenVPN client-connect or authentication event causes a generated CSO file to be written outside t
Read at NIST National Vulnerability Database (CVE API 2.0)
- Product
- OpenVPN / WireGuard / IPsec, FreeBSD / OpenBSD / NetBSD, pfSense / OPNsense
- CVSS
- 5.9
- Exposure class
- Edge / VPN / firewall, Operating system
Why it ranks 15 (Routine)
- CVSS 5.9 medium
- Exposed product class: edge / VPN / firewall
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-58393 on this site · NVD · CVE.org · Vulnpedia
Related coverage
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