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Vulnerabilities

CVE-2026-44237

High
CWE-1390 — Weakness Type
Published: May 29, 2026  ·  Modified: Jun 5, 2026  ·  Source: NVD
CVSS v3
8.1
🔗 NVD Official
📄 Description (English)

FreePBX is an open source IP PBX. Prior to 17.0.8, the FreePBX api module's OAuth2 implementation does not sufficiently validate client credentials during token issuance. Knowledge of a valid client_id is required. The validateClient() method in ClientRepository.php unconditionally returns true, allowing any party with knowledge of a valid client_id to obtain OAuth2 access tokens without providing the correct client_secret. This vulnerability is fixed in 17.0.8.

🤖 AI Executive Summary

FreePBX versions prior to 17.0.8 contain an OAuth2 authentication bypass vulnerability in the API module where the validateClient() method fails to properly validate client credentials. An attacker with knowledge of a valid client_id can obtain access tokens without providing the correct client_secret, potentially gaining unauthorized access to PBX systems.

📄 Description (Arabic)

يحتوي FreePBX على ثغرة في وحدة OAuth2 API حيث تفشل طريقة validateClient() في التحقق الصحيح من بيانات اعتماد العميل. يمكن لأي طرف لديه معرفة بـ client_id صحيح الحصول على رموز الوصول دون تقديم client_secret الصحيح. تؤثر هذه الثغرة على جميع إصدارات FreePBX قبل 17.0.8.

🤖 ملخص تنفيذي (AI)

FreePBX versions prior to 17.0.8 contain an OAuth2 authentication bypass vulnerability in the API module where the validateClient() method fails to properly validate client credentials. An attacker with knowledge of a valid client_id can obtain access tokens without providing the correct client_secret, potentially gaining unauthorized access to PBX systems.

🤖 AI Intelligence Analysis Analyzed: Jun 3, 2026 12:19
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
telecom government banking
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade FreePBX to version 17.0.8 or later immediately. If immediate upgrade is not possible, disable the OAuth2 API module and implement network-level access controls to restrict API endpoint access to trusted IP addresses only. Review and rotate all OAuth2 client credentials and audit access logs for unauthorized token issuance.
🔧 خطوات المعالجة (العربية)
قم بترقية FreePBX إلى الإصدار 17.0.8 أو أحدث على الفور. إذا لم يكن الترقية الفورية ممكنة، قم بتعطيل وحدة OAuth2 API وتطبيق عناصر تحكم على مستوى الشبكة لتقييد الوصول إلى نقاط نهاية API للعناوين الموثوقة فقط. راجع وأعد تعيين جميع بيانات اعتماد عميل OAuth2 وتدقيق سجلات الوصول للتحقق من إصدار الرموز غير المصرح به.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1.1 5.2.1 5.2.2
🔵 SAMA CSF
ID.AM-2 PR.AC-1 PR.AC-6
🟡 ISO 27001:2022
A.9.2.1 A.9.4.3 A.14.2.1
📦 Affected Products / CPE 1 entries
sangoma:freepbx
📊 CVSS Score
8.1
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityN — None / Network
📋 Quick Facts
Severity High
CVSS Score8.1
CWECWE-1390
EPSS0.03%
Exploit No
Patch ✗ No
Published 2026-05-29
Source Feed nvd
🇸🇦 Saudi Risk Score
8.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-1390
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