Go/github.com/jkroepke/openvpn-auth-oauth2 CVE-2026-41070: critical 10, EPSS 0.58%

openvpn-auth-oauth2 returns FUNC_SUCCESS on client-deny, allowing unauthenticated VPN access

Action: Upgrade github.com/jkroepke/openvpn-auth-oauth2 to 1.27.3 or later.

go get github.com/jkroepke/openvpn-auth-oauth2@v1.27.3

Affected

Fixed versions

Sources

• osv: GHSA-246w-jgmq-88fg
• https://github.com/jkroepke/openvpn-auth-oauth2/security/advisories/GHSA-246w-jgmq-88fg
• https://nvd.nist.gov/vuln/detail/CVE-2026-41070
• https://github.com/jkroepke/openvpn-auth-oauth2/pull/829
• https://github.com/jkroepke/openvpn-auth-oauth2/commit/36f69a6c67c1054da7cbfa04ced3f0555127c8f2
• https://github.com/OpenVPN/openvpn/blob/master/include/openvpn-plugin.h.in
• https://github.com/OpenVPN/openvpn3/blob/master/doc/webauth.md
• https://github.com/jkroepke/openvpn-auth-oauth2
• https://github.com/jkroepke/openvpn-auth-oauth2/releases/tag/v1.27.3

CVE-2026-41070 · published 2026-04-22T14:28:11Z · modified 2026-05-20T19:41:27.183534498Z · JSON