WordPress Broken Link Checker plugin < 2.4.12 - Unauthenticated RCE via Query Variable Injection vulnerability

Unauthenticated RCE via Query Variable Injection vulnerability discovered by Jakub Herman in WordPress Plugin Broken Link Checker versions 2.4.12...

CVE-2026-18937 Broken Link Checker < 2.4.12 - Unauthenticated RCE via Query Variable Injection

The Broken Link Checker WordPress plugin before 2.4.12 does not limit which query variables it accepts from user input on sites using plain permalinks, allowing unauthenticated users to overwrite arbitrary PHP global variables, and to execute arbitrary code on the server when a classic non-block ...

CVE-2026-18937

The Broken Link Checker WordPress plugin (versions through 2.4.11 ) is vulnerable to unauthenticated Remote Code Execution (RCE) via query variable injection (CWE-94). On sites using plain permalinks , the plugin fails to limit which query variables it accepts from user input, allowing an attacke...

CVE-2026-18937 Broken Link Checker < 2.4.12 - Unauthenticated RCE via Query Variable Injection

The Broken Link Checker WordPress plugin before 2.4.12 does not limit which query variables it accepts from user input on sites using plain permalinks, allowing unauthenticated users to overwrite arbitrary PHP global variables, and to execute arbitrary code on the server when a classic non-block ...