CVE-2026-6703 | CyberChimps Responsive Blocks Plugin up to 2.2.1 on WordPress authorization (EUVD-2026-24069)

VDB-358420 · CVE-2026-6703 · EUVD-2026-24069 CYBERCHIMPS RESPONSIVE BLOCKS PLUGIN UP TO 2.2.1 ON WORDPRESS AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.2 $0-$5k 4.91 Summaryinfo A vulnerability was found in CyberChimps Responsive Blocks Plugin up to 2.2.1 on WordPress. It has been declared as critical. The impacted element is an unknown function. Executing a manipulation can lead to authorization. This vulnerability is registered as CVE-2026-6703. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component. Detailsinfo A vulnerability has been found in CyberChimps Responsive Blocks Plugin up to 2.2.1 on WordPress and classified as critical. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes: The 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. The weakness was published by Even Stokkedalen. The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-6703 since 04/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. Upgrading to version 2.2.0 eliminates this vulnerability. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-24069). Productinfo Type WordPress Plugin Vendor CyberChimps Name Responsive Blocks Plugin Version 2.2.0 2.2.1 CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 5.2 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 4.3 CNA Vector (Wordfence): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-862 / CWE-863 / CWE-285 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Responsive Blocks Plugin 2.2.0 Timelineinfo 04/20/2026 CVE reserved 04/21/2026 +1 days Advisory disclosed 04/21/2026 +0 days VulDB entry created 04/21/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: Even Stokkedalen Status: Confirmed CVE: CVE-2026-6703 (🔒) GCVE (CVE): GCVE-0-2026-6703 GCVE (VulDB): GCVE-100-358420 EUVD: 🔒 Entryinfo Created: 04/21/2026 09:58 Updated: 04/21/2026 10:23 Changes: 04/21/2026 09:58 (65), 04/21/2026 10:23 (1) Complete: 🔍 Cache ID: 99:686:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸