CVE-2026-1242: CWE-863 Incorrect Authorization in blockspare BlockSpare – Gutenberg Blocks for News, Magazine, Blog & Business Websites
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.
AI Analysis
Technical Summary
CVE-2026-1242 describes an authorization bypass vulnerability in the BlockSpare plugin for WordPress (versions <=4.2.6). The vulnerability is caused by incorrect logic in the permission callback where an AND (&&) operator is used instead of an OR (||) operator. This logic error allows authenticated users with Subscriber-level permissions or higher to bypass intended authorization checks and create arbitrary posts within the site.
Potential Impact
Authenticated attackers with Subscriber-level access or higher can bypass authorization checks and create arbitrary posts. This could lead to unauthorized content creation but does not impact confidentiality or availability according to the CVSS vector. The overall impact is limited to integrity.
Mitigation Recommendations
No patch or official fix is currently referenced. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict Subscriber-level user capabilities or monitor for unauthorized post creation as a temporary mitigation.
CVE-2026-1242: CWE-863 Incorrect Authorization in blockspare BlockSpare – Gutenberg Blocks for News, Magazine, Blog & Business Websites
Description
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.
CVSS v3.1
Score 4.3medium
Affected software
blockspare
BlockSpare – Gutenberg Blocks for News, Magazine, Blog & Business Websites
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1242 describes an authorization bypass vulnerability in the BlockSpare plugin for WordPress (versions <=4.2.6). The vulnerability is caused by incorrect logic in the permission callback where an AND (&&) operator is used instead of an OR (||) operator. This logic error allows authenticated users with Subscriber-level permissions or higher to bypass intended authorization checks and create arbitrary posts within the site.
Potential Impact
Authenticated attackers with Subscriber-level access or higher can bypass authorization checks and create arbitrary posts. This could lead to unauthorized content creation but does not impact confidentiality or availability according to the CVSS vector. The overall impact is limited to integrity.
Mitigation Recommendations
No patch or official fix is currently referenced. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict Subscriber-level user capabilities or monitor for unauthorized post creation as a temporary mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-01-20T18:43:48.857Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aae3e0255bf5e2cf54897cf
Added to database: 09/19/2026, 07:47:14 UTC
Last enriched: 09/19/2026, 08:02:42 UTC
Last updated: 09/19/2026, 22:12:52 UTC
Views: 6
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