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Vulnerabilities

CVE-2026-44413

High
CWE-306 — Weakness Type
Published: May 11, 2026  ·  Modified: May 18, 2026  ·  Source: NVD
CVSS v3
8.2
🔗 NVD Official
📄 Description (English)

In JetBrains TeamCity before 2026.1
2025.11.5 authenticated users could expose server API to unauthorised access

🤖 AI Executive Summary

CVE-2026-44413 is a high-severity authentication bypass vulnerability in JetBrains TeamCity affecting versions before 2026.1 and 2025.11.5. Authenticated users can exploit missing access controls (CWE-306) to expose the server API to unauthorized access, potentially allowing lateral movement and data exfiltration. This vulnerability poses significant risk to organizations using TeamCity for CI/CD pipelines, particularly in regulated sectors. Immediate mitigation is critical as no patch is currently available.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 14, 2026 08:49
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations in financial services (SAMA-regulated banks), government agencies (NCA oversight), energy sector (ARAMCO, Saudi Aramco subsidiaries), and telecommunications (STC, Mobily) heavily rely on TeamCity for CI/CD automation. This vulnerability enables authenticated insiders or compromised accounts to bypass API authentication, potentially accessing sensitive deployment configurations, source code repositories, build artifacts, and infrastructure credentials. Government entities and critical infrastructure operators face heightened risk of supply chain compromise and unauthorized system modifications. Financial institutions risk exposure of payment processing pipelines and transaction data.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Energy and Utilities Telecommunications Healthcare Manufacturing Technology and Software Development
⚖️ Saudi Risk Score (AI)
8.1
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all TeamCity instances across your organization and document versions
2. Restrict TeamCity API access to trusted networks only using firewall rules and VPN requirements
3. Implement network segmentation to isolate TeamCity servers from production systems
4. Enable comprehensive audit logging for all API calls and authentication attempts
5. Review recent API access logs for suspicious activity from authenticated users
6. Disable unnecessary user accounts and enforce principle of least privilege for API tokens

PATCHING GUIDANCE:
1. Upgrade to TeamCity 2026.1 or 2025.11.5 immediately when available
2. Subscribe to JetBrains security notifications for patch release announcements
3. Test patches in non-production environments before deployment

COMPENSATING CONTROLS (until patch available):
1. Implement API gateway with additional authentication layer (OAuth 2.0, mutual TLS)
2. Deploy Web Application Firewall (WAF) rules to monitor and block suspicious API patterns
3. Enforce IP whitelisting for API endpoints
4. Implement rate limiting on API endpoints
5. Use API key rotation policies (30-day maximum validity)

DETECTION RULES:
1. Monitor for API calls from unexpected user accounts or service principals
2. Alert on API access outside normal business hours or from unusual geographic locations
3. Track failed authentication attempts followed by successful API calls
4. Monitor for bulk API requests or data exfiltration patterns
5. Log all changes to build configurations, deployment pipelines, and credentials
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع مثيلات TeamCity عبر مؤسستك وتوثيق الإصدارات
2. قيد وصول واجهة برمجة التطبيقات في TeamCity على الشبكات الموثوقة فقط باستخدام قواعد جدار الحماية ومتطلبات VPN
3. تنفيذ تقسيم الشبكة لعزل خوادم TeamCity عن الأنظمة الإنتاجية
4. تفعيل تسجيل التدقيق الشامل لجميع استدعاءات واجهة برمجة التطبيقات ومحاولات المصادقة
5. مراجعة سجلات وصول واجهة برمجة التطبيقات الأخيرة للنشاط المريب من المستخدمين المصرح لهم
6. تعطيل حسابات المستخدمين غير الضرورية وفرض مبدأ الامتياز الأدنى لرموز واجهة برمجة التطبيقات

إرشادات التصحيح:
1. قم بالترقية إلى TeamCity 2026.1 أو 2025.11.5 فوراً عند توفره
2. اشترك في إشعارات أمان JetBrains لإعلانات إصدار التصحيح
3. اختبر التصحيحات في بيئات غير الإنتاج قبل النشر

الضوابط البديلة (حتى توفر التصحيح):
1. تنفيذ بوابة واجهة برمجة التطبيقات مع طبقة مصادقة إضافية (OAuth 2.0، TLS المتبادل)
2. نشر قواعد جدار تطبيقات الويب (WAF) لمراقبة وحظر أنماط واجهة برمجة التطبيقات المريبة
3. فرض القائمة البيضاء للعناوين لنقاط نهاية واجهة برمجة التطبيقات
4. تنفيذ تحديد معدل على نقاط نهاية واجهة برمجة التطبيقات
5. استخدام سياسات دوران مفاتيح واجهة برمجة التطبيقات (الحد الأقصى 30 يوماً)

قواعد الكشف:
1. مراقبة استدعاءات واجهة برمجة التطبيقات من حسابات المستخدمين أو المبادئ الخدمية غير المتوقعة
2. التنبيه على وصول واجهة برمجة التطبيقات خارج ساعات العمل العادية أو من مواقع جغرافية غير عادية
3. تتبع محاولات المصادقة الفاشلة متبوعة باستدعاءات واجهة برمجة التطبيقات الناجحة
4. مراقبة طلبات واجهة برمجة التطبيقات الضخمة أو أنماط سرقة البيانات
5. تسجيل جميع التغييرات على تكوينات البناء وخطوط أنابيب النشر والبيانات الاعتماد
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.9.2.1 - User access management and authentication controls ECC 2024 A.9.4.3 - Cryptographic controls for API authentication ECC 2024 A.12.4.1 - Event logging and monitoring of access attempts ECC 2024 A.13.1.1 - Network security and segregation
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Asset management and inventory SAMA CSF PR.AC-1 - Access control and authentication mechanisms SAMA CSF PR.AC-3 - Access enforcement and least privilege SAMA CSF DE.AE-1 - Anomalies and events detection SAMA CSF DE.CM-1 - System monitoring and logging
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access control ISO 27001:2022 A.8.2 - User access management ISO 27001:2022 A.8.3 - User responsibilities ISO 27001:2022 A.8.22 - Information security incident management ISO 27001:2022 A.12.4 - Logging
🟣 PCI DSS v4.0.1
PCI DSS 2.1 - Default security parameters PCI DSS 6.2 - Security patches and updates PCI DSS 7.1 - Access control implementation PCI DSS 10.2 - User access logging and monitoring
📦 Affected Products / CPE 1 entries
jetbrains:teamcity
📊 CVSS Score
8.2
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityL — Low / Local
AvailabilityN — None / Network
📋 Quick Facts
Severity High
CVSS Score8.2
CWECWE-306
EPSS0.00%
Exploit No
Patch ✗ No
Published 2026-05-11
Source Feed nvd
Views 2
🇸🇦 Saudi Risk Score
8.1
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-306
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