Authorization Bypass in BlockSpare Plugin for WordPress
CVE-2026-1242

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Blockspare – Gutenberg Blocks For News, Magazine, Blog & Business Websites
Vendor
CVE Published:
19 September 2026

What is CVE-2026-1242?

The BlockSpare plugin for WordPress has a significant authorization bypass vulnerability due to a coding error in the permission callback logic. This issue, present in all versions up to and including 4.2.6, arises from the improper use of an AND operator in place of an OR operator. As a result, authenticated users with Subscriber-level access or higher can manipulate the authorization checks, allowing them to create arbitrary posts and potentially compromise the integrity of the website.

Affected Version(s)

BlockSpare – Gutenberg Blocks for News, Magazine, Blog & Business Websites 0 <= 4.2.6

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/blockspare/tag...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Osvaldo Noe Gonzalez Del Rio (Os)
.