CVE-2026-63650 Auth bypass in OpenVPN
Remote authenticated users can be misidentified by ignoring the configured X.509 username identity lookup field in OpenVPN.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-63650?
CVE-2026-63650 is a low-severity authentication bypass vulnerability in OpenVPN, published on 14 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field
Which versions are affected by CVE-2026-63650?
How do I fix CVE-2026-63650?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-63650 being exploited?
There is no known exploitation of CVE-2026-63650 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-63650, GHSA-f94x-h63g-g9m8.