Critical severity9.0NVD Advisory· Published Aug 19, 2026· Updated Aug 26, 2026
CVE-2026-18937
CVE-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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <2.4.12
Patches
Vulnerability mechanics
References
1News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (August 17, 2026 to August 23, 2026)Wordfence Blog · Aug 27, 2026