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Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage… (CVE-2026-106017)

0
Medium
VulnerabilityCVE-2026-106017gcveosvghsa-rr4q-p38q-3hw2cve-2026-106017ghsa
Published: 10/22/2026 (10/22/2026, 12:31:14 UTC)
Source: GCVE Database

Description

A vulnerability in the OpenVPN 3 Core library versions 3.4 through 3.11.7 allows attackers to bypass extended key usage restrictions due to improper certificate validation.

CVSS v4.0

Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
None
Vuln. Availability
None
Subsq. Confidentiality
High
Subsq. Integrity
None
Subsq. Availability
None
Scope
X
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected software

Affected versions
>=3.4 <=3.11.7

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/22/2026, 17:26:10 UTC

Technical Analysis

The OpenVPN 3 Core library versions 3.4 through 3.11.7 contain a certificate validation flaw that enables attackers to circumvent extended key usage restrictions. This improper validation could undermine the security assumptions about certificate usage within the library.

Potential Impact

Attackers can bypass extended key usage restrictions, potentially allowing misuse of certificates in ways that the security policy intended to prevent. This could weaken the trust model of the OpenVPN 3 Core library's certificate handling.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-rr4q-p38q-3hw2
Osv Schema Version
1.4.0
Aliases
["CVE-2026-106017"]
Database Specific Severity
MODERATE
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6ada44db4d27ba8daa6a51a2

Added to database: 10/22/2026, 17:16:11 UTC

Last enriched: 10/22/2026, 17:26:10 UTC

Last updated: 10/22/2026, 19:15:13 UTC

Views: 2

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