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Vulnerabilities

CVE-2026-26936

Medium
Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).
CWE-1333 — Weakness Type
Published: Feb 26, 2026  ·  Modified: Mar 5, 2026  ·  Source: NVD
CVSS v3
4.9
🔗 NVD Official
📄 Description (English)

Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).

🤖 AI Executive Summary

CVE-2026-26936 is a denial of service vulnerability in Kibana's AI Inference Anonymization Engine caused by inefficient regular expression complexity that can be exploited through regex exponential blowup. This medium-severity issue (CVSS 4.9) allows attackers to cause service disruption by crafting malicious input patterns.

📄 Description (Arabic)

تحتوي ثغرة CVE-2026-26936 على مشكلة تعقيد التعبيرات النمطية غير الفعالة في محرك إخفاء الهوية بالذكاء الاصطناعي في Kibana. يمكن للمهاجمين استغلال هذه الثغرة لإرسال أنماط إدخال خاصة تسبب انفجار أسي في معالجة التعبيرات النمطية (ReDoS). هذا يؤدي إلى استهلاك موارد النظام بشكل مفرط وحجب الخدمة عن المستخدمين الشرعيين.

🤖 ملخص تنفيذي (AI)

This vulnerability affects Kibana's AI anonymization features through regex complexity issues that enable denial of service attacks. Organizations using Kibana for log analysis and monitoring in Saudi Arabia should apply patches to prevent service disruptions.

🤖 AI Intelligence Analysis Analyzed: May 30, 2026 07:07
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
banking telecom energy government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.0
/ 10.0
🔧 Remediation Steps (English)
Update Kibana to the latest patched version addressing CVE-2026-26936. Implement input validation and sanitization for regex patterns. Deploy Web Application Firewalls (WAF) to filter malicious regex payloads. Monitor CPU and memory usage for anomalous patterns indicating ReDoS attacks. Restrict access to AI anonymization features to authorized users only.
🔧 خطوات المعالجة (العربية)
قم بتحديث Kibana إلى أحدث إصدار يتضمن إصلاح هذه الثغرة. طبق التحقق من صحة المدخلات وتنظيفها لأنماط التعبيرات النمطية. استخدم جدران الحماية لتطبيقات الويب لتصفية حمولات التعبيرات النمطية الضارة. راقب استخدام المعالج والذاكرة للكشف عن الأنماط غير الطبيعية. قيد الوصول إلى ميزات إخفاء الهوية للمستخدمين المصرحين فقط.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
7.1 7.2
🔵 SAMA CSF
ID.BE-5 PR.DS-6
🟡 ISO 27001:2022
A.12.6.1 A.14.2.1
📦 Affected Products / CPE 2 entries
elastic:kibana
elastic:kibana
📊 CVSS Score
4.9
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredH — High
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity Medium
CVSS Score4.9
CWECWE-1333
Exploit No
Patch ✗ No
Published 2026-02-26
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
5.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-1333
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