CVE-2026-41070
critical
CVSS v3
10.0
CVSS v4 NEW
—
VIR risk
10.0
Description
openvpn-auth-oauth2 returns FUNC_SUCCESS on client-deny, allowing unauthenticated VPN access
Predictions
Exploit likelihood
98%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| sid | Fixed | 1.27.3-1 |
| forky | Fixed | 1.27.3-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/jkroepke/openvpn-auth-oauth2 | >=1.26.3,<1.27.3 | 1.27.3 |
| GO | github.com/jkroepke/openvpn-auth-oauth2 | >= 1.26.3, < 1.27.3 | 1.27.3 |
References
- https://github.com/jkroepke/openvpn-auth-oauth2/commit/36f69a6c67c1054da7cbfa04ced3f0555127c8f2
- 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/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
- https://security-tracker.debian.org/tracker/CVE-2026-41070
- https://github.com/advisories/GHSA-246w-jgmq-88fg
CWEs
CWE-287
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.