CVE-2026-18937EPSS p43.7%

CVE-2026-18937CVE-2026-18937

Description

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) is active.

Scoring

CVSS 9.0 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS0.54% probability of exploitation · percentile 43.7% · 2026-10-05T12:00:23Z
Last modified2026-08-26
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.