CVE-2026-1242: Blockspare – Gutenberg Blocks For News, Magazine, Blog & Business Websites

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The BlockSpare plugin for WordPress is vulnerable to authorization bypass due to incorrect logic in the permission callback in all versions up to, and including, 4.2.6 due to the use of an AND (&&) operator instead of an OR (||) operator. This makes it possible for authenticated attackers, with Subscriber-level access and above, to bypass authorization checks and create arbitrary posts.

Affected products

• Blockspare Blockspare – Gutenberg Blocks For News, Magazine, Blog & Business Websites: up to and including 4.2.6

Published 2026-09-19. Last modified 2026-09-21.