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SCA: security update for github.com/jkroepke/openvpn-auth-oauth2 (GHSA-246w-jgmq-88fg)

critical Tenable Cloud Security Plugin ID 440735

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - openvpn-auth-oauth2 is a plugin/management interface client for OpenVPN server to handle an OIDC based
 single sign-on (SSO) auth flows. From version 1.26.3 to before version 1.27.3, when openvpn-auth-oauth2 is
 deployed in the experimental plugin mode (shared library loaded by OpenVPN via the plugin directive),
 clients that do not support WebAuth/SSO (e.g., the openvpn CLI on Linux) are incorrectly admitted to the
 VPN despite being denied by the authentication logic. The default management-interface mode is not
 affected because it does not use the OpenVPN plugin return-code mechanism. This issue has been patched in
 version 1.27.3. (CVE-2026-41070)

Solution

Update the github.com/jkroepke/openvpn-auth-oauth2 library and its related packages to version 1.27.3 or later.

See Also

https://github.com/advisories/GHSA-246w-jgmq-88fg

Plugin Details

Severity: Critical

ID: 440735

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 4/22/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.8

Percentile: 96.94

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-41070

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/22/2026

Vulnerability Publication Date: 4/22/2026

Reference Information

CVE: CVE-2026-41070

cwe: CWE-287