CVE-2026-72603 wg-easy wg-easy - OS Command Injection
Attackers with client creation permissions can inject commands into WireGuard configs to execute arbitrary code as root.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-72603?
CVE-2026-72603 is a critical command injection vulnerability in wg-easy, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An OS command injection vulnerability in wg-easy 15.3.0 allows users with the clients.create permission to execute arbitrary commands as root by injecting newline-delimited WireGuard PostUp directives into the client name field. The client name is written to the WireGuard configuration file without neutralizing newline characters, allowing injection of arbitrary directives that are executed by wg-quick with root privileges. An attacker with clients.create permission achieves root code execution on the host.
Weakness: CWE-78
Which versions are affected by CVE-2026-72603?
How do I fix CVE-2026-72603?
No fix has been published for CVE-2026-72603 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-72603 being exploited?
There is no known exploitation of CVE-2026-72603 in the wild and no public exploit code.
Sources
Also known as GHSA-g5jq-gh88-3gmw.