📄 Description (English)
Mailhog 1.0.1 contains a stored cross-site scripting vulnerability that allows attackers to inject malicious scripts through email attachments. Attackers can send crafted emails with XSS payloads to execute arbitrary API calls, including message deletion and browser manipulation.
🤖 AI Executive Summary
CVE-2022-50908 is a stored XSS vulnerability in Mailhog 1.0.1 that allows attackers to inject malicious scripts through email attachments, enabling arbitrary API calls and message manipulation. While no public exploit exists, the vulnerability poses a significant risk to organizations using Mailhog for email testing and development environments. Immediate patching is critical as the vulnerability can be exploited to compromise email integrity and potentially escalate to broader system access.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 8, 2026 05:00
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily affects Saudi government agencies, financial institutions, and large enterprises that use Mailhog in development and testing environments. High-risk sectors include: SAMA-regulated banks and financial institutions (email security critical for compliance), NCA-overseen government agencies (potential data exfiltration through email), healthcare organizations (patient data in emails), and telecommunications companies like STC (internal email systems). The vulnerability is particularly concerning in development environments that may contain sensitive data or connect to production systems, potentially allowing attackers to manipulate communications and bypass email-based security controls.
🏢 Affected Saudi Sectors
Banking and Financial Services (SAMA-regulated)
Government Agencies (NCA-overseen)
Healthcare
Telecommunications (STC, Mobily)
Energy and Utilities (ARAMCO)
Software Development Companies
IT Service Providers
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
6.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all instances of Mailhog 1.0.1 in your environment, particularly in development, testing, and staging systems
2. Restrict network access to Mailhog instances to authorized users only (implement IP whitelisting)
3. Disable or isolate Mailhog instances that are not actively in use
4. Review email logs for suspicious attachment uploads or XSS payloads
Patching Guidance:
1. Upgrade Mailhog to the latest patched version immediately
2. Verify patch installation by checking version numbers and testing XSS payload injection
3. Apply patches to all instances including development, testing, and staging environments
Compensating Controls (if immediate patching not possible):
1. Implement Web Application Firewall (WAF) rules to detect and block XSS payloads in email attachments
2. Disable attachment functionality in Mailhog if not required
3. Run Mailhog in a sandboxed environment isolated from production systems
4. Implement strict Content Security Policy (CSP) headers
Detection Rules:
1. Monitor for HTTP requests containing script tags or JavaScript code in email attachment parameters
2. Alert on API calls to /api/v1/messages/{id} with DELETE or PUT methods from unexpected sources
3. Log and review all attachment uploads to Mailhog instances
4. Monitor for unusual browser manipulation or DOM modifications in Mailhog UI
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع نسخ Mailhog 1.0.1 في بيئتك، خاصة في أنظمة التطوير والاختبار والتجهيز
2. تقييد الوصول إلى شبكة نسخ Mailhog للمستخدمين المصرح لهم فقط (تطبيق القائمة البيضاء للعناوين)
3. تعطيل أو عزل نسخ Mailhog التي لا تستخدم بنشاط
4. مراجعة سجلات البريد الإلكتروني للتحميلات المريبة أو حمولات XSS
إرشادات التصحيح:
1. ترقية Mailhog إلى أحدث إصدار مصحح فوراً
2. التحقق من تثبيت التصحيح بفحص أرقام الإصدارات واختبار حقن حمولة XSS
3. تطبيق التصحيحات على جميع النسخ بما في ذلك بيئات التطوير والاختبار والتجهيز
الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تطبيق قواعد جدار حماية تطبيقات الويب (WAF) للكشف عن حمولات XSS وحجبها في مرفقات البريد
2. تعطيل وظيفة المرفقات في Mailhog إذا لم تكن مطلوبة
3. تشغيل Mailhog في بيئة معزولة منفصلة عن أنظمة الإنتاج
4. تطبيق رؤوس سياسة أمان المحتوى (CSP) صارمة
قواعد الكشف:
1. مراقبة طلبات HTTP التي تحتوي على علامات البرامج النصية أو رمز JavaScript في معاملات مرفقات البريد
2. التنبيه على استدعاءات API إلى /api/v1/messages/{id} باستخدام طرق DELETE أو PUT من مصادر غير متوقعة
3. تسجيل ومراجعة جميع تحميلات المرفقات إلى نسخ Mailhog
4. مراقبة معالجة المتصفح غير العادية أو تعديلات DOM في واجهة Mailhog
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.14.2.1 - Information security requirements for development, testing and production environments
ECC 2024 A.14.3.1 - Separation of development, testing and production environments
ECC 2024 A.13.1.3 - Segregation of networks
🔵 SAMA CSF
SAMA CSF ID.BE-3.2 - Organizational roles, responsibilities, and authorities are established
SAMA CSF PR.AC-1.1 - Identities and credentials are issued, managed, verified, revoked and audited
SAMA CSF PR.PT-1.1 - Security awareness and training program is established
🟡 ISO 27001:2022
ISO 27001:2022 A.8.1 - User endpoint devices
ISO 27001:2022 A.8.3 - Access control
ISO 27001:2022 A.14.2 - Development, testing and acceptance of information systems
🟣 PCI DSS v4.0.1
PCI DSS 6.5.7 - Cross-site scripting (XSS)
PCI DSS 6.2 - Security patches and updates
🔗 References & Sources 4
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https://github.com/mailhog/MailHog
disclosure@vulncheck.com
https://www.exploit-db.com/exploits/50971
disclosure@vulncheck.com
https://www.shodan.io/search?query=mailhog
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/mailhog-stored-cross-site-scripting-xss
disclosure@vulncheck.com