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WordPress plugin

BlockSpare — Gutenberg Site Builder Blocks & Starter Sites <= 4.2.6 - Incorrect Authorization to Authenticated (Subscriber+) Arbitrary Post Creation

CVE-2026-1242Published · Updated

Action summary

Affected: ≤4.2.6Update to 5.0.0 or newer

All remediation steps
Watch plugin
Severity
Medium4.3
CVSS
4.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-863 Incorrect Authorization
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

BlockSpare – Gutenberg Blocks, AI Content Generator & Site Builder for news, magazine, blog and business sites blockspare

  1. Affected≤ 4.2.6
  2. Patched in5.0.0

Update to 5.0.0 or newer.

You are affected if you run ≤ 4.2.6. Version 5.0.0 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under BlockSpare – Gutenberg Blocks, AI Content Generator & Site Builder for news, magazine, blog and business sites.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 5.0.0, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch BlockSpare – Gutenberg Blocks, AI Content Generator & Site Builder for news, magazine, blog and business sites to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Osvaldo Noe Gonzalez Del Rio (Os).

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in BlockSpare – Gutenberg Blocks, AI Content Generator & Site Builder for news, magazine, blog and business sites

All 10
More vulnerabilities in BlockSpare – Gutenberg Blocks, AI Content Generator & Site Builder for news, magazine, blog and business sites
SeverityVulnerabilityCVEPublished
Medium6.1Reflected DOM-Based Cross-Site Scripting via url Parameter
≤5.5.8Update to 5.5.9
CVE-2024-13362
Medium4.3Authenticated (Contributor+) Sensitive Information Exposure
≤3.2.13.2Update to 3.2.14
CVE-2025-62026
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Image Carousel and Image Slider Widgets
≤3.2.13.1Update to 3.2.13.2
CVE-2025-4684
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.2.9Update to 3.2.10
CVE-2025-47495
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.2.4Update to 3.2.5
CVE-2024-47363

Timeline

  1. CVE published

    Severity medium, CVSS 4.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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