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Vulnerabilities

CVE-2026-6551

Medium
CWE-79 — Weakness Type
Published: Apr 28, 2026  ·  Modified: May 1, 2026  ·  Source: NVD
CVSS v3
6.4
🔗 NVD Official
📄 Description (English)

The Timeline Blocks for Gutenberg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'titleTag' attribute of the timeline-blocks/tb-timeline-blocks block in all versions up to, and including, 1.1.10 due to insufficient input sanitization and output escaping on user supplied attributes. 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 Timeline Blocks for Gutenberg WordPress plugin contains a Stored XSS vulnerability in the 'titleTag' attribute that allows authenticated contributors to inject malicious scripts. These scripts execute when users access affected pages, potentially compromising website integrity and user data.

📄 Description (Arabic)

يحتوي مكون Timeline Blocks for Gutenberg على ثغرة Stored XSS في خاصية 'titleTag' بسبب عدم كفاية تنظيف المدخلات والتحقق من المخرجات. يمكن للمهاجمين المصرحين على مستوى المساهم وما فوق حقن برامج نصية ضارة تُنفذ عند وصول المستخدمين إلى الصفحات المصابة.

🤖 ملخص تنفيذي (AI)

Timeline Blocks for Gutenberg plugin in WordPress contains a Stored XSS vulnerability in the 'titleTag' attribute that allows authenticated contributors to inject malicious scripts. These scripts execute when users access affected pages, potentially compromising website integrity and user data.

🤖 AI Intelligence Analysis Analyzed: May 14, 2026 03:15
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
government banking telecom healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.0
/ 10.0
🔧 Remediation Steps (English)
Update Timeline Blocks for Gutenberg plugin to version 1.1.11 or later immediately. Restrict contributor-level access to trusted users only. Implement Web Application Firewall (WAF) rules to detect and block XSS payloads. Conduct security audit of all timeline blocks created by contributors.
🔧 خطوات المعالجة (العربية)
قم بتحديث مكون Timeline Blocks for Gutenberg إلى الإصدار 1.1.11 أو أحدث فوراً. قيد الوصول على مستوى المساهم للمستخدمين الموثوقين فقط. طبق قواعد جدار حماية تطبيقات الويب لكشف ومنع حمولات XSS. أجرِ تدقيقاً أمنياً لجميع كتل الجدول الزمني التي أنشأها المساهمون.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1.1 5.2.1
🔵 SAMA CSF
CC-6.1 CC-6.2
🟡 ISO 27001:2022
A.14.2.1 A.14.2.5
📊 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
EPSS0.04%
Exploit No
Patch ✗ No
Published 2026-04-28
Source Feed nvd
🇸🇦 Saudi Risk Score
7.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-79
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