Risk Letters

Exploited vulnerability

CVE-2026-13756

TLP:CLEAR

Improper Privilege Management

The WP Grid Builder plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.3.3. This is due to missing authorization and meta key validation in the `update()` handler for the `/wp-json/wpgb/v2/metadata` REST endpoint. This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to Administrator b

Facts

  • Vendor: WP Grid Builder
  • Product: WP Grid Builder
  • CVSS: 8.8
  • EPSS (probability of exploitation within 30 days): 0.4 %
  • First known exploitation: 22 October 2026
  • First seen by Risk Letters: 11 July 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD