VULNERABILITY INTELLIGENCE
CVE-2026-18937
CVSS score9 CRITICAL
EPSS probability1.99%
CISA KEVNot currently listed
Published2026-08-19
Last modified2026-08-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-94