PT-2026-78299 · WordPress · Broken Link Checker

·

CVE-2026-18937

·

Published

2026-08-19

·

Updated

2026-08-19

CVSS v3.1

9.0

Critical

VectorAV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Broken Link Checker versions prior to 2.4.12
Description On sites using plain permalinks, the plugin fails to limit the query variables accepted from user input. This allows unauthenticated users to overwrite arbitrary PHP global variables and execute arbitrary code on the server when a classic (non-block) editor is active.
Recommendations Update Broken Link Checker to version 2.4.12 or later.

Exploit

Fix

RCE

Code Injection

Found an issue in the description? Have something to add? Feel free to write us 👾

Weakness Enumeration

Related Identifiers

CVE-2026-18937

Affected Products

Broken Link Checker