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Vulnerabilities

CVE-2026-49368

High
CWE-79 — Weakness Type
Published: May 29, 2026  ·  Modified: Jun 1, 2026  ·  Source: NVD
CVSS v3
8.7
🔗 NVD Official
📄 Description (English)

In JetBrains YouTrack before 2026.1.13162 stored XSS in project notification templates was possible

🤖 AI Executive Summary

JetBrains YouTrack versions before 2026.1.13162 contain a stored cross-site scripting (XSS) vulnerability in project notification templates with a CVSS score of 8.7. This vulnerability allows authenticated attackers to inject malicious scripts that persist in the system and execute when other users view notifications, potentially leading to credential theft, session hijacking, or unauthorized actions. Immediate patching or mitigation is critical for organizations using YouTrack for project management and issue tracking.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Jun 1, 2026 16:48
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations in government, banking, and large enterprises using JetBrains YouTrack for project management and software development are at risk. Government agencies (NCA, CITC) and financial institutions (SAMA-regulated banks) managing sensitive projects through YouTrack could face data exposure, unauthorized access to project information, and potential compromise of development pipelines. Technology companies and system integrators in Saudi Arabia relying on YouTrack for internal project tracking are particularly vulnerable to insider threats and lateral movement attacks.
🏢 Affected Saudi Sectors
Government Banking and Financial Services Technology and Software Development Telecommunications Energy and Utilities Healthcare Education
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Audit all YouTrack instances to identify current version numbers and compare against 2026.1.13162
2. Review project notification templates for suspicious or unauthorized modifications
3. Check audit logs for template creation/modification activities by users
4. Restrict access to notification template configuration to trusted administrators only

Patching Guidance:
1. Upgrade JetBrains YouTrack to version 2026.1.13162 or later immediately
2. Test the upgrade in a non-production environment first
3. Verify all notification templates after upgrade

Compensating Controls (if immediate patching not possible):
1. Disable project notification templates temporarily or restrict their use to system administrators
2. Implement Content Security Policy (CSP) headers to prevent inline script execution
3. Use Web Application Firewall (WAF) rules to detect and block XSS payloads in notification template submissions
4. Enforce strict input validation and output encoding on all template fields
5. Implement additional authentication for accessing notification settings

Detection Rules:
1. Monitor for suspicious characters in notification template fields: <script>, javascript:, onerror=, onload=
2. Alert on any modifications to notification templates by non-administrative users
3. Track unusual notification delivery patterns or template rendering errors
4. Log all access to notification template configuration pages
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تدقيق جميع مثيلات YouTrack لتحديد أرقام الإصدارات الحالية والمقارنة مع 2026.1.13162
2. مراجعة قوالب إشعارات المشروع للتعديلات المريبة أو غير المصرح بها
3. فحص سجلات التدقيق لأنشطة إنشاء/تعديل القوالب من قبل المستخدمين
4. تقييد الوصول إلى تكوين قالب الإشعارات للمسؤولين الموثوقين فقط

إرشادات التصحيح:
1. ترقية JetBrains YouTrack إلى الإصدار 2026.1.13162 أو أحدث فوراً
2. اختبار الترقية في بيئة غير إنتاجية أولاً
3. التحقق من جميع قوالب الإشعارات بعد الترقية

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تعطيل قوالب إشعارات المشروع مؤقتاً أو تقييد استخدامها على مسؤولي النظام
2. تنفيذ رؤوس سياسة أمان المحتوى (CSP) لمنع تنفيذ النصوص البرمجية المضمنة
3. استخدام قواعد جدار حماية تطبيقات الويب (WAF) للكشف عن حمولات XSS وحجبها
4. فرض التحقق الصارم من المدخلات وترميز المخرجات على جميع حقول القالب
5. تنفيذ مصادقة إضافية للوصول إلى إعدادات الإشعارات

قواعد الكشف:
1. مراقبة الأحرف المريبة في حقول قالب الإشعارات: <script>، javascript:، onerror=، onload=
2. التنبيه على أي تعديلات على قوالب الإشعارات من قبل المستخدمين غير الإداريين
3. تتبع أنماط تسليم الإشعارات غير العادية أو أخطاء عرض القالب
4. تسجيل جميع الوصول إلى صفحات تكوين قالب الإشعارات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures A.6.1.1 - Access control policy A.7.1.1 - Physical and environmental security A.12.2.1 - Change management procedures A.14.2.1 - Security requirements analysis and specification
🔵 SAMA CSF
ID.GV-1 - Organizational context and governance PR.AC-1 - Access control and management PR.DS-2 - Data security and protection DE.CM-1 - Detection and monitoring RS.RP-1 - Response planning
🟡 ISO 27001:2022
A.5.1 - Management direction for information security A.6.1 - Internal organization A.8.1 - Asset management A.12.2 - Change management A.14.2 - Security requirements analysis and specification
📦 Affected Products / CPE 1 entries
jetbrains:youtrack
📊 CVSS Score
8.7
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionR — Required
ScopeC — Changed
ConfidentialityH — High
IntegrityH — High
AvailabilityN — None / Network
📋 Quick Facts
Severity High
CVSS Score8.7
CWECWE-79
EPSS0.01%
Exploit No
Patch ✗ No
Published 2026-05-29
Source Feed nvd
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-79
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