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Vulnerabilities

CVE-2026-26935

Medium
Improper Input Validation (CWE-20) in the internal Content Connectors search endpoint in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)
CWE-20 — Weakness Type
Published: Feb 26, 2026  ·  Modified: Mar 5, 2026  ·  Source: NVD
CVSS v3
6.5
🔗 NVD Official
📄 Description (English)

Improper Input Validation (CWE-20) in the internal Content Connectors search endpoint in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)

🤖 AI Executive Summary

CVE-2026-26935 is a medium-severity vulnerability in Kibana's Content Connectors search endpoint that allows attackers to cause denial of service through improper input validation. The vulnerability enables malicious actors to manipulate input data and crash or degrade the availability of Kibana instances.

📄 Description (Arabic)

تحتوي ثغرة CVE-2026-26935 على خلل في التحقق من صحة الإدخال في نقطة نهاية البحث الخاصة بموصلات المحتوى في Kibana. يمكن للمهاجمين استغلال هذا الخلل لإرسال بيانات مصممة خصيصاً تسبب حجب الخدمة وتعطيل توفر النظام.

🤖 ملخص تنفيذي (AI)

A medium-severity vulnerability in Kibana's Content Connectors search endpoint allows denial of service attacks through improper input validation. Attackers can manipulate input data to crash or degrade Kibana availability, affecting organizations relying on this analytics platform.

🤖 AI Intelligence Analysis Analyzed: May 12, 2026 11:36
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
banking telecom energy government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
6.0
/ 10.0
🔧 Remediation Steps (English)
Update Kibana to the latest patched version immediately. Implement input validation and sanitization controls on the Content Connectors search endpoint. Deploy rate limiting and request filtering at the application and network levels. Monitor for suspicious search queries and implement Web Application Firewall (WAF) rules to block malformed requests.
🔧 خطوات المعالجة (العربية)
قم بتحديث Kibana إلى أحدث إصدار معدل فوراً. طبق عناصر التحقق من صحة الإدخال والتنظيف على نقطة نهاية البحث. نفذ تحديد معدل الطلبات والتصفية على مستويات التطبيق والشبكة. راقب الاستعلامات المريبة وطبق قواعد جدار حماية تطبيقات الويب.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.12.6.1 A.14.2.1
🔵 SAMA CSF
CC-6.1 CC-6.2
🟡 ISO 27001:2022
A.12.6.1 A.14.2.1
📦 Affected Products / CPE 3 entries
elastic:kibana
elastic:kibana
elastic:kibana:9.3.0
📊 CVSS Score
6.5
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity Medium
CVSS Score6.5
CWECWE-20
Exploit No
Patch ✗ No
Published 2026-02-26
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
6.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-20
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