CVE-2026-4801 | godaddy Page Builder Gutenberg Blocks Plugin up to 3.1.16 on WordPress cross site scripting

VDB-358178 · CVE-2026-4801 · GCVE-0-2026-4801 GODADDY PAGE BUILDER GUTENBERG BLOCKS PLUGIN UP TO 3.1.16 ON WORDPRESS CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.9 $0-$5k 0.00+ Summaryinfo A vulnerability, which was classified as problematic, was found in godaddy Page Builder Gutenberg Blocks Plugin up to 3.1.16 on WordPress. The impacted element is an unknown function. Such manipulation leads to cross site scripting. This vulnerability is listed as CVE-2026-4801. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component. Detailsinfo A vulnerability was found in godaddy Page Builder Gutenberg Blocks Plugin up to 3.1.16 on WordPress and classified as problematic. Affected by this issue is some unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes: The Page Builder Gutenberg Blocks – CoBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via external iCal feed data in all versions up to, and including, 3.1.16 due to insufficient output escaping of event titles, descriptions, and locations fetched from external iCal feeds in the Events block rendering function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The weakness was presented by Fernando Mecozzi. The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-4801 since 03/25/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project. Upgrading to version 3.1.16 eliminates this vulnerability. Productinfo Type WordPress Plugin Vendor godaddy Name Page Builder Gutenberg Blocks Plugin Version 3.1.0 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 3.1.7 3.1.8 3.1.9 3.1.10 3.1.11 3.1.12 3.1.13 3.1.14 3.1.15 3.1.16 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.9 VulDB Meta Temp Score: 4.9 VulDB Base Score: 3.5 VulDB Temp Score: 3.4 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.4 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: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 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: Page Builder Gutenberg Blocks Plugin 3.1.16 Timelineinfo 03/25/2026 CVE reserved 04/18/2026 +23 days Advisory disclosed 04/18/2026 +0 days VulDB entry created 04/18/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: Fernando Mecozzi Status: Confirmed CVE: CVE-2026-4801 (🔒) GCVE (CVE): GCVE-0-2026-4801 GCVE (VulDB): GCVE-100-358178 Entryinfo Created: 04/18/2026 09:23 Changes: 04/18/2026 09:23 (66) Complete: 🔍 Cache ID: 99:0CA:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸