CVE-2026-26213 thingino-firmware api.cgi Unauthenticated Command Injection in Captive Portal
Remote attackers can execute arbitrary commands as root via unsanitized HTTP parameters in the captive portal, leading to full device compromise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-26213?
CVE-2026-26213 is a high-severity command injection vulnerability in themactep thingino-firmware, published on 26 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
thingino-firmware versions up to the firmware-2026-03-16 release contains an unauthenticated os command injection vulnerability in the WiFi captive portal CGI script that allows remote attackers to execute arbitrary commands as root by injecting malicious code through unsanitized HTTP parameter names. Attackers can exploit the eval function in parse_query() and parse_post() functions to achieve remote code execution and perform privileged configuration changes including root password reset and SSH authorized_keys modification, resulting in full persistent device compromise.
Weakness: CWE-78
Which versions are affected by CVE-2026-26213?
It affects 1 product.
Products include Thingino Thingino Firmware.
How do I fix CVE-2026-26213?
No fix has been published for CVE-2026-26213 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-2026-26213 being exploited?
There is no known exploitation of CVE-2026-26213 in the wild and no public exploit code.
Sources
Also known as GHSA-h56g-w4h5-4239.