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Vulnerabilities

CVE-2021-47970

High
CWE-789 — Weakness Type
Published: May 16, 2026  ·  Modified: May 23, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

Macaron Notes 5.5 contains a denial of service vulnerability that allows attackers to crash the application by creating notes with excessively long character strings. Attackers can generate a payload containing 350000 repeated characters and paste it into a note field to trigger application crash and stop functionality.

🤖 AI Executive Summary

Macaron Notes 5.5 is vulnerable to denial of service attacks through excessively long character strings in note fields, allowing attackers to crash the application. An attacker can exploit this by creating notes with 350,000+ repeated characters to disable the application's functionality.

📄 Description (Arabic)

تحتوي نسخة Macaron Notes 5.5 على ثغرة في معالجة المدخلات تسمح بإدخال سلاسل أحرف غير محدودة. يمكن للمهاجمين استغلال هذه الثغرة لاستهلاك موارد النظام وتعطيل التطبيق بشكل كامل. الثغرة تؤثر على توفر الخدمة وتؤدي إلى فقدان الإنتاجية.

🤖 ملخص تنفيذي (AI)

تطبيق Macaron Notes الإصدار 5.5 يحتوي على ثغرة حجب الخدمة التي تسمح للمهاجمين بتعطيل التطبيق من خلال إدخال سلاسل أحرف طويلة جداً. يمكن للمهاجمين استغلال هذه الثغرة بإنشاء ملاحظات تحتوي على أكثر من 350,000 حرف متكرر لإيقاف عمل التطبيق.

🤖 AI Intelligence Analysis Analyzed: May 21, 2026 02:01
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade Macaron Notes to version 5.6 or later. Implement input validation to limit character length in note fields. Deploy rate limiting and resource monitoring to detect and block DoS attempts. Restrict maximum note size at the application and database levels.
🔧 خطوات المعالجة (العربية)
قم بترقية Macaron Notes إلى الإصدار 5.6 أو أحدث. طبق التحقق من صحة المدخلات لتحديد طول الأحرف في حقول الملاحظات. نشر تحديد معدل المراقبة والموارد لكشف محاولات حجب الخدمة. قيد حجم الملاحظة الأقصى على مستويات التطبيق وقاعدة البيانات.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.3 5.4
🔵 SAMA CSF
CC-6.1 CC-6.2
🟡 ISO 27001:2022
A.12.2.1 A.12.6.1
📊 CVSS Score
7.5
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.5
CWECWE-789
EPSS0.04%
Exploit No
Patch ✗ No
Published 2026-05-16
Source Feed nvd
🇸🇦 Saudi Risk Score
7.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-789
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