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Thu, 15 Oct 2026 17:30:00 +0000
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ssvc
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Thu, 15 Oct 2026 15:30:00 +0000
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| Description | 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 the intended directory. The file content is generated OpenVPN configuration rather than arbitrary bytes, and practical exploitation requires the attacker to cause a matching common name or username to be processed. This issue is fixed in version 26.1.11. | |
| Title | OPNsense: OpenVPN Client Specific Override common_name allows path traversal in generated CSO files | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV3_1
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Subscriptions
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-15T16:07:55.688Z
Reserved: 2026-06-30T18:19:58.377Z
Link: CVE-2026-58393
Updated: 2026-10-15T16:07:30.895Z
Status : Received
Published: 2026-10-15T16:18:18.310
Modified: 2026-10-15T17:17:25.537
Link: CVE-2026-58393
No data.
OpenCVE Enrichment
No data.
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CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')