📄 Description (English)
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
🤖 AI Executive Summary
CVE-2026-33814 is a denial-of-service vulnerability in Go's HTTP/2 implementation that causes an infinite loop when processing malformed SETTINGS frames with SETTINGS_MAX_FRAME_SIZE set to 0. This affects Go runtime and the http2 library, potentially impacting any service built with Go that handles HTTP/2 traffic. The vulnerability can be exploited remotely without authentication to exhaust server resources and cause service unavailability.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 13, 2026 20:34
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations running Go-based services, particularly: Banking sector (SAMA-regulated fintech platforms, payment gateways, and digital banking services), Government agencies (NCA-regulated digital services, e-government platforms), Telecommunications (STC, Mobily, Zain infrastructure), Energy sector (ARAMCO digital systems, oil & gas operations), and Healthcare providers. Any organization with public-facing Go HTTP/2 services is vulnerable to remote DoS attacks that could disrupt critical operations without requiring authentication.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Telecommunications
Energy and Oil & Gas
Healthcare
E-commerce
Cloud Service Providers
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all Go-based services in your infrastructure using 'go version' and check if HTTP/2 is enabled
2. Implement rate limiting and connection limits on HTTP/2 endpoints to mitigate DoS impact
3. Deploy WAF rules to detect and block malformed SETTINGS frames with MAX_FRAME_SIZE=0
Patching Guidance:
1. Update Go runtime to patched versions (1.22.x, 1.23.x with security fixes)
2. Update golang.org/x/net/http2 package to latest patched version
3. Rebuild and redeploy all Go applications
4. Test HTTP/2 functionality post-patch in staging environment
Compensating Controls:
1. Disable HTTP/2 if not required and use HTTP/1.1 only
2. Implement connection timeouts and resource limits per connection
3. Monitor CPU and memory usage for anomalous patterns
4. Use reverse proxy (nginx, HAProxy) with HTTP/2 validation
Detection Rules:
1. Monitor for sustained high CPU usage on Go processes handling HTTP/2
2. Alert on rapid increase in CONTINUATION frame processing
3. Log and alert on SETTINGS frames with MAX_FRAME_SIZE=0
4. Track connection states for hung/zombie connections
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع الخدمات المبنية على Go في البنية التحتية الخاصة بك باستخدام 'go version' وتحقق مما إذا كان HTTP/2 مفعلاً
2. طبق تحديد معدل الطلبات وحدود الاتصال على نقاط نهاية HTTP/2 للتخفيف من تأثير حجب الخدمة
3. نشر قواعد جدار الحماية لاكتشاف وحظر إطارات SETTINGS المشوهة مع MAX_FRAME_SIZE=0
إرشادات التصحيح:
1. قم بتحديث وقت تشغيل Go إلى الإصدارات المصححة (1.22.x، 1.23.x مع إصلاحات الأمان)
2. قم بتحديث حزمة golang.org/x/net/http2 إلى أحدث إصدار مصحح
3. أعد بناء ونشر جميع تطبيقات Go
4. اختبر وظيفة HTTP/2 بعد التصحيح في بيئة التجريب
الضوابط البديلة:
1. عطل HTTP/2 إذا لم تكن مطلوبة واستخدم HTTP/1.1 فقط
2. طبق مهل زمنية للاتصال وحدود الموارد لكل اتصال
3. راقب استخدام وحدة المعالجة المركزية والذاكرة للأنماط الشاذة
4. استخدم وكيل عكسي (nginx، HAProxy) مع التحقق من صحة HTTP/2
قواعد الكشف:
1. راقب استخدام وحدة المعالجة المركزية المرتفع المستمر على عمليات Go التي تتعامل مع HTTP/2
2. تنبيه عند الزيادة السريعة في معالجة إطارات CONTINUATION
3. تسجيل والتنبيه على إطارات SETTINGS مع MAX_FRAME_SIZE=0
4. تتبع حالات الاتصال للاتصالات المعلقة/الزومبي
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
ECC 2024 A.12.2.1 - Change management procedures
ECC 2024 A.14.2.1 - Secure development policy
🔵 SAMA CSF
SAMA CSF ID.BE-3.1 - Organizational resilience
SAMA CSF PR.IP-12 - Software development and quality assurance
SAMA CSF DE.CM-1 - Detection processes and tools
🟡 ISO 27001:2022
ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities
ISO 27001:2022 A.14.2.1 - Secure development, implementation and maintenance
ISO 27001:2022 A.8.1.3 - Segregation of duties
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates
PCI DSS 11.2 - Vulnerability scanning
🔗 References & Sources 5
🔗
https://go.dev/cl/761581
security@golang.org
Patch
🔗
https://go.dev/cl/761640
security@golang.org
Patch
🔗
https://go.dev/issue/78476
security@golang.org
Issue Tracking
Mailing List
🔗
https://groups.google.com/g/golang-announce/c/qcCIEXso47M
security@golang.org
Release Notes
🔗
https://pkg.go.dev/vuln/GO-2026-4918
security@golang.org
Vendor Advisory
📦 Affected Products / CPE 3 entries
golang:go
golang:go
golang:http2