SEPTEMBER 17, 2026
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Case File

CVE-2026-18937

CRITICAL · CVSS 9 EPSS 0.40%

Source: NVD + CISA KEV + EPSS · Published 2026-08-19 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The Broken Link Checker plugin for WordPress versions prior to 2.4.12 is vulnerable due to inadequate validation of query variables, enabling unauthenticated users to overwrite PHP global variables. This flaw can lead to arbitrary code execution on servers with classic permalinks enabled. WordPress site administrators using this plugin should prioritize updating to the latest version to mitigate potential exploitation risks.

CVE
CVE-2026-18937
Severity
CRITICAL
CVSS
9
EPSS
0.40%
WordPress

Original NVD 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.