CVE-2026-22209: thingino-firmware api.cgi Unauthenticated Command Injection in Captive Portal
thingino-firmware up to commit e3f6a41 (published on 2026-03-15) 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 parsequery() and parsepost() functions to achieve remote code execution and perform privileged configuration changes including root password reset and SSH authorizedkeys modification, resulting in full persistent device compromise.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-22209?
CVE-2026-22209 is classified as a high severity vulnerability due to its potential for cross-site scripting attacks.
How do I fix CVE-2026-22209?
To fix CVE-2026-22209, update wpDiscuz to version 7.6.47 or later.
Who is affected by CVE-2026-22209?
CVE-2026-22209 affects all installations of wpDiscuz before version 7.6.47.
What type of vulnerability is CVE-2026-22209?
CVE-2026-22209 is a cross-site scripting (XSS) vulnerability.
Can attackers exploit CVE-2026-22209 without admin access?
No, CVE-2026-22209 can only be exploited by attackers with administrator access.