Responsive Blocks <= 2.2.1 - Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via AJAX Actions

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-6703
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-21 07:16:09 UTC
Updated2026-04-21 07:16:09 UTC
DescriptionThe Responsive Blocks – Page Builder for Blocks & Patterns plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 2.2.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to modify global site-wide plugin configuration options, including toggling custom CSS, disabling blocks, changing layout defaults such as content width, container padding, and container gap, and altering auto-block-recovery behavior.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cyberchimps Responsive Blocks Page Builder For Blocks Patterns affected 2.0.9 2.2.1 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/responsive-block-editor-addons/trunk/includes/class-r... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/responsive-block-editor-addons/trunk/includes/class-r... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/responsive-block-editor-addons/trunk/includes/class-r... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/responsive-block-editor-addons/tags/2.2.0/includes/cl... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3465616 [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/187b072d-6314-4ac1-a924-b1432... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/responsive-block-editor-addons/tags/2.2.0/includes/cl... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/responsive-block-editor-addons/tags/2.2.0/includes/cl... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Even Stokkedalen (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-20T17:50:51.000ZDisclosed
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