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CVE-2026-13756 is a privilege escalation vulnerability in the WP Grid Builder plugin for WordPress affecting all versions up to and including 2.3.3. The flaw is caused by missing authorization checks and insufficient meta key validation in the update() handler exposed through the plugin's metadata REST API endpoint. Because the handler does not properly restrict which metadata keys may be modified, an authenticated user can submit a crafted nested array payload that updates their own WordPress capability metadata. By altering the capability structure associated with their account, a low-privileged user can escalate privileges to Administrator.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.