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Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 1h Global phishing Multiple sectors HIGH 2h Global insider Cybersecurity Services CRITICAL 2h Global ransomware Multiple sectors (U.S. companies) CRITICAL 2h Global malware Financial Services, Cryptocurrency CRITICAL 2h Global malware Technology and Cloud Services HIGH 2h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 3h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 1h Global phishing Multiple sectors HIGH 2h Global insider Cybersecurity Services CRITICAL 2h Global ransomware Multiple sectors (U.S. companies) CRITICAL 2h Global malware Financial Services, Cryptocurrency CRITICAL 2h Global malware Technology and Cloud Services HIGH 2h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 3h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 1h Global phishing Multiple sectors HIGH 2h Global insider Cybersecurity Services CRITICAL 2h Global ransomware Multiple sectors (U.S. companies) CRITICAL 2h Global malware Financial Services, Cryptocurrency CRITICAL 2h Global malware Technology and Cloud Services HIGH 2h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 3h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h
Vulnerabilities

CVE-2026-22245

High
Mastodon SSRF Vulnerability Allows Access to Internal Network Resources
CWE-918 — Weakness Type
Published: Jan 8, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

Mastodon is a free, open-source social network server based on ActivityPub. By nature, Mastodon performs a lot of outbound requests to user-provided domains. Mastodon, however, has some protection mechanism to disallow requests to local IP addresses (unless specified in `ALLOWED_PRIVATE_ADDRESSES`) to avoid the "confused deputy" problem. The list of disallowed IP address ranges was lacking some IP address ranges that can be used to reach local IP addresses. An attacker can use an IP address in the affected ranges to make Mastodon perform HTTP requests against loopback or local network hosts, potentially allowing access to otherwise private resources and services. This is fixed in Mastodon v4.5.4, v4.4.11, v4.3.17 and v4.2.29.

🤖 AI Executive Summary

Mastodon social network server contains a Server-Side Request Forgery (SSRF) vulnerability due to incomplete IP address range filtering. Attackers can exploit this to make the server perform HTTP requests to loopback or local network hosts, potentially accessing private resources and services that should be protected.

📄 Description (Arabic)

تؤثر هذه الثغرة على خوادم ماستودون التي تقوم بطبيعتها بإجراء العديد من الطلبات الخارجية إلى نطاقات يوفرها المستخدمون. على الرغم من وجود آليات حماية لمنع الطلبات إلى عناوين IP المحلية، إلا أن قائمة نطاقات عناوين IP المحظورة كانت تفتقر إلى بعض النطاقات التي يمكن استخدامها للوصول إلى عناوين IP المحلية. يمكن للمهاجم استخدام عنوان IP في النطاقات المتأثرة لجعل ماستودون يقوم بطلبات HTTP ضد مضيفات الشبكة المحلية أو الحلقة الراجعة. هذا يمثل مشكلة "النائب المرتبك" الأمنية الكلاسيكية التي قد تؤدي إلى الكشف عن معلومات حساسة أو الوصول غير المصرح به إلى الخدمات الداخلية.

🤖 ملخص تنفيذي (AI)

يحتوي خادم الشبكة الاجتماعية ماستودون على ثغرة تزوير طلبات من جانب الخادم (SSRF) بسبب عدم اكتمال تصفية نطاقات عناوين IP. يمكن للمهاجمين استغلال هذه الثغرة لجعل الخادم ينفذ طلبات HTTP إلى مضيفات الشبكة المحلية أو الحلقة الراجعة، مما قد يسمح بالوصول إلى الموارد والخدمات الخاصة التي يجب حمايتها.

🤖 AI Intelligence Analysis Analyzed: Feb 28, 2026 08:01
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations using Mastodon for internal social networking or public engagement face risks of unauthorized access to internal services, databases, and APIs. This could expose sensitive government or financial data, particularly affecting entities under SAMA and NCA oversight that maintain strict network segmentation requirements.
🏢 Affected Saudi Sectors
القطاع الحكومي القطاع المالي والمصرفي قطاع التعليم قطاع الإعلام والاتصالات قطاع الخدمات الرقمية
⚖️ Saudi Risk Score (AI)
8.0
/ 10.0
🔧 Remediation Steps (English)
1. Immediately upgrade Mastodon to patched versions: v4.5.4, v4.4.11, v4.3.17, or v4.2.29 depending on your current version branch.
2. Review and configure ALLOWED_PRIVATE_ADDRESSES environment variable to explicitly define permitted internal IP ranges if legitimate internal access is required.
3. Implement network-level controls including egress filtering, web application firewalls, and monitoring of outbound connections from Mastodon servers to detect anomalous internal network access attempts.
🔧 خطوات المعالجة (العربية)
1. الترقية الفورية لماستودون إلى الإصدارات المصححة: v4.5.4 أو v4.4.11 أو v4.3.17 أو v4.2.29 حسب فرع الإصدار الحالي.
2. مراجعة وتكوين متغير البيئة ALLOWED_PRIVATE_ADDRESSES لتحديد نطاقات IP الداخلية المسموح بها بشكل صريح إذا كان الوصول الداخلي المشروع مطلوباً.
3. تنفيذ ضوابط على مستوى الشبكة بما في ذلك تصفية الاتصالات الصادرة وجدران حماية تطبيقات الويب ومراقبة الاتصالات الصادرة من خوادم ماستودون لاكتشاف محاولات الوصول غير الطبيعية إلى الشبكة الداخلية.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-2 (Network Security) ECC-2-1 (Vulnerability Management) ECC-3-1 (Security Monitoring) ECC-5-1 (Application Security)
🔵 SAMA CSF
CCC-1.1.1 (Cybersecurity Controls) CCC-2.1.2 (Vulnerability Assessment) CCC-3.1.1 (Network Segmentation) CCC-4.2.1 (Secure Development)
🟡 ISO 27001:2022
A.12.6.1 (Management of Technical Vulnerabilities) A.13.1.3 (Segregation in Networks) A.14.2.1 (Secure Development Policy)
📦 Affected Products / CPE 4 entries
joinmastodon:mastodon
joinmastodon:mastodon
joinmastodon:mastodon
joinmastodon:mastodon
📊 CVSS Score
7.5
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityN — None / Network
AvailabilityN — None / Network
📋 Quick Facts
Severity High
CVSS Score7.5
CWECWE-918
EPSS0.04%
Exploit No
Patch ✓ Yes
Published 2026-01-08
Source Feed nvd
Views 1
🇸🇦 Saudi Risk Score
8.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
patch-available CWE-918
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