{"apiVersion":"1.0","identifier":"CVE-2026-41070","description":"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.","publishedAt":"2026-05-08T16:16:11","lastModifiedAt":null,"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41070","cvssScore":10,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","epssProbability":0.00438,"riskScore":1.04,"affectedProduct":"openvpn-auth-oauth2","affectedVersions":"<1.27.3","vulnerabilityType":"Package","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-41070","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-41070","en":"https://www.redsauce.net/en/cves/CVE-2026-41070","fr":"https://www.redsauce.net/fr/cves/CVE-2026-41070","pt":"https://www.redsauce.net/pt/cves/CVE-2026-41070","de":"https://www.redsauce.net/de/cves/CVE-2026-41070","sk":"https://www.redsauce.net/sk/cves/CVE-2026-41070","el":"https://www.redsauce.net/el/cves/CVE-2026-41070"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-41070"}}