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Global insider Education HIGH 15h Global supply_chain Software Development and Technology HIGH 20h Global apt Government/Critical Infrastructure CRITICAL 21h Global vulnerability Enterprise Software / Data Analytics CRITICAL 22h Global vulnerability Artificial Intelligence and Technology HIGH 1d Global general Technology and Artificial Intelligence MEDIUM 1d Global general Technology and Artificial Intelligence HIGH 1d Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d Global insider Education HIGH 15h Global supply_chain Software Development and Technology HIGH 20h Global apt Government/Critical Infrastructure CRITICAL 21h Global vulnerability Enterprise Software / Data Analytics CRITICAL 22h Global vulnerability Artificial Intelligence and Technology HIGH 1d Global general Technology and Artificial Intelligence MEDIUM 1d Global general Technology and Artificial Intelligence HIGH 1d Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d Global insider Education HIGH 15h Global supply_chain Software Development and Technology HIGH 20h Global apt Government/Critical Infrastructure CRITICAL 21h Global vulnerability Enterprise Software / Data Analytics CRITICAL 22h Global vulnerability Artificial Intelligence and Technology HIGH 1d Global general Technology and Artificial Intelligence MEDIUM 1d Global general Technology and Artificial Intelligence HIGH 1d Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d
Vulnerabilities

CVE-2026-4801

Medium
CWE-79 — Weakness Type
Published: Apr 18, 2026  ·  Modified: Apr 21, 2026  ·  Source: NVD
CVSS v3
6.4
🔗 NVD Official
📄 Description (English)

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.

🤖 AI Executive Summary

The CoBlocks WordPress plugin is vulnerable to Stored XSS through improperly escaped iCal feed data in the Events block, allowing authenticated contributors to inject malicious scripts. This vulnerability affects all versions up to 3.1.16 and executes when users view compromised pages.

📄 Description (Arabic)

يؤثر هذا الضعف على مكون CoBlocks الشهير المستخدم في مواقع WordPress السعودية التي تعتمد على تغذيات iCal الخارجية لعرض الأحداث. يمكن للمهاجمين ذوي صلاحيات المساهم استغلال عدم تصفية المخرجات لحقن كود JavaScript ضار يُنفذ في متصفحات الزوار.

🤖 ملخص تنفيذي (AI)

يحتوي مكون CoBlocks لـ WordPress على ثغرة XSS مخزنة من خلال بيانات تغذية iCal غير المحمية بشكل صحيح في كتلة الأحداث. يمكن للمساهمين المصرح لهم بحقن برامج نصية ضارة تُنفذ عند زيارة الصفحات المتأثرة.

🤖 AI Intelligence Analysis Analyzed: May 13, 2026 10:48
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
government healthcare telecom banking
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
6.0
/ 10.0
🔧 Remediation Steps (English)
Update CoBlocks plugin to version 3.1.17 or later immediately. Review and audit all pages using the Events block for suspicious content. Restrict Contributor-level access to trusted users only. Implement Web Application Firewall rules to detect and block XSS payloads. Monitor iCal feed sources for unauthorized modifications.
🔧 خطوات المعالجة (العربية)
قم بتحديث مكون CoBlocks إلى الإصدار 3.1.17 أو أحدث فوراً. راجع جميع الصفحات التي تستخدم كتلة الأحداث بحثاً عن محتوى مريب. قيد وصول المساهمين للمستخدمين الموثوقين فقط. طبق قواعد جدار الحماية لكشف حقن XSS. راقب مصادر تغذية iCal للتعديلات غير المصرح بها.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.12.2.1 A.14.2.1
🔵 SAMA CSF
CC6.1 CC6.2
🟡 ISO 27001:2022
A.6.2.1 A.14.2.1
🔗 References & Sources 13
🔗
https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index...
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index...
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index...
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index...
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index...
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L218
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L245
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L246
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L255
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php#L91
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/changeset/3475789/coblocks/trunk/src/blocks/events/i...
security@wordfence.com
🔗
https://plugins.trac.wordpress.org/changeset?old_path=%2Fcoblocks/tags/3.1.16&new_path=...
security@wordfence.com
🔗
https://www.wordfence.com/threat-intel/vulnerabilities/id/bde0aef3-aa61-4ee7-9cbf-9f51c...
security@wordfence.com
📊 CVSS Score
6.4
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeC — Changed
ConfidentialityL — Low / Local
IntegrityL — Low / Local
AvailabilityN — None / Network
📋 Quick Facts
Severity Medium
CVSS Score6.4
CWECWE-79
EPSS0.02%
Exploit No
Patch ✗ No
Published 2026-04-18
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
6.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-79
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