CVE catalog

CVE-2026-41070

DEBIAN-CVE-2026-41070

[CVE catalog]

Severity
Unknown · CVSS 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.44% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianopenvpn-auth-oauth2141.26.2+dfsg-1vulnerable
Debianopenvpn-auth-oauth2141.26.4+dfsg-1vulnerable
Debianopenvpn-auth-oauth2141.26.4+dfsg-2vulnerable
Debianopenvpn-auth-oauth2141.26.4+dfsg-3vulnerable
Debianopenvpn-auth-oauth2141.26.4+dfsg-4vulnerable
Debianopenvpn-auth-oauth2141.26.4+dfsg-5vulnerable
Debianopenvpn-auth-oauth2141.26.4+dfsg-6vulnerable
Debianopenvpn-auth-oauth2141.27.0-1vulnerable
Debianopenvpn-auth-oauth2141.27.0-2vulnerable
Debianopenvpn-auth-oauth2141.27.1-1vulnerable
Debianopenvpn-auth-oauth2141.27.2-1vulnerable
Debianopenvpn-auth-oauth2141.27.3-1fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianopenvpn-auth-oauth2deb141.27.3-1Not reportedDEBIAN-CVE-2026-41070Not reported

OpenFactory catalog packages

No matching packages in this catalog.

Observed:

References

[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]