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Global insider Education HIGH 58m Global supply_chain Software Development and Technology HIGH 5h Global apt Government/Critical Infrastructure CRITICAL 7h Global vulnerability Enterprise Software / Data Analytics CRITICAL 8h Global vulnerability Artificial Intelligence and Technology HIGH 11h Global general Technology and Artificial Intelligence MEDIUM 15h Global general Technology and Artificial Intelligence HIGH 16h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d Global insider Education HIGH 58m Global supply_chain Software Development and Technology HIGH 5h Global apt Government/Critical Infrastructure CRITICAL 7h Global vulnerability Enterprise Software / Data Analytics CRITICAL 8h Global vulnerability Artificial Intelligence and Technology HIGH 11h Global general Technology and Artificial Intelligence MEDIUM 15h Global general Technology and Artificial Intelligence HIGH 16h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d Global insider Education HIGH 58m Global supply_chain Software Development and Technology HIGH 5h Global apt Government/Critical Infrastructure CRITICAL 7h Global vulnerability Enterprise Software / Data Analytics CRITICAL 8h Global vulnerability Artificial Intelligence and Technology HIGH 11h Global general Technology and Artificial Intelligence MEDIUM 15h Global general Technology and Artificial Intelligence HIGH 16h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d
Vulnerabilities

CVE-2026-27149

Medium
Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, SQL injection in PM tag filtering (`list_private_messages_tag`) allows bypassing tag filter condit
CWE-89 — Weakness Type
Published: Feb 26, 2026  ·  Modified: Mar 5, 2026  ·  Source: NVD
CVSS v3
6.5
🔗 NVD Official
📄 Description (English)

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, SQL injection in PM tag filtering (`list_private_messages_tag`) allows bypassing tag filter conditions, potentially disclosing unauthorized private message metadata. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

🤖 AI Executive Summary

A SQL injection vulnerability in Discourse's private message tag filtering allows authenticated attackers to bypass tag filters and access unauthorized private message metadata. The vulnerability affects versions prior to 2025.12.2, 2026.1.1, and 2026.2.0. While no public exploit exists, the medium CVSS score (6.5) and information disclosure nature pose moderate risk to organizations using Discourse for internal communications.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 12, 2026 12:27
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations using Discourse for internal communications—particularly government agencies, financial institutions, and large enterprises—face risk of unauthorized access to sensitive private message metadata. Government entities under NCA oversight and SAMA-regulated financial institutions are most at risk due to confidentiality requirements for internal communications. The vulnerability could expose organizational discussions, decision-making processes, and sensitive business information to unauthorized internal users.
🏢 Affected Saudi Sectors
Government Banking and Financial Services Healthcare Energy and Utilities Telecommunications Large Enterprises Education
⚖️ Saudi Risk Score (AI)
6.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all Discourse instances in your environment and document their versions
2. Restrict access to private messaging features to trusted users only
3. Review audit logs for suspicious tag filtering queries or unusual private message access patterns
4. Implement database query monitoring to detect SQL injection attempts

Patching Guidance:
1. Upgrade immediately to Discourse versions 2025.12.2, 2026.1.1, or 2026.2.0 or later
2. Test patches in non-production environments before deployment
3. Schedule maintenance windows for production upgrades

Compensating Controls (if immediate patching not possible):
1. Implement database-level access controls to restrict user permissions
2. Enable SQL query logging and monitoring for anomalies
3. Disable private messaging features if not critical to operations
4. Implement network segmentation to limit Discourse access

Detection Rules:
1. Monitor for SQL syntax characters in tag filter parameters (quotes, semicolons, UNION keywords)
2. Alert on database queries containing 'list_private_messages_tag' with unusual WHERE clauses
3. Track failed authentication attempts followed by private message access
4. Monitor for bulk private message metadata queries from single users
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع مثيلات Discourse في بيئتك وقم بتوثيق إصداراتها
2. قيد الوصول إلى ميزات المراسلة الخاصة للمستخدمين الموثوقين فقط
3. راجع سجلات التدقيق للاستعلامات المريبة لتصفية العلامات أو أنماط الوصول غير المعتادة للرسائل الخاصة
4. طبق مراقبة استعلامات قاعدة البيانات للكشف عن محاولات حقن SQL

إرشادات التصحيح:
1. قم بالترقية فوراً إلى إصدارات Discourse 2025.12.2 أو 2026.1.1 أو 2026.2.0 أو أحدث
2. اختبر التصحيحات في بيئات غير الإنتاج قبل النشر
3. جدول نوافذ الصيانة لترقيات الإنتاج

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. طبق ضوابط الوصول على مستوى قاعدة البيانات لتقييد أذونات المستخدم
2. فعّل تسجيل استعلامات SQL ومراقبة الشذوذ
3. عطّل ميزات المراسلة الخاصة إذا لم تكن حرجة للعمليات
4. طبق تقسيم الشبكة لتحديد وصول Discourse

قواعد الكشف:
1. راقب أحرف بناء جملة SQL في معاملات مرشح العلامات (علامات الاقتباس والفواصل المنقوطة وكلمات UNION)
2. أصدر تنبيهات على استعلامات قاعدة البيانات التي تحتوي على 'list_private_messages_tag' مع شروط WHERE غير المعتادة
3. تتبع محاولات المصادقة الفاشلة متبوعة بوصول الرسائل الخاصة
4. راقب استعلامات بيانات وصفية للرسائل الخاصة بكميات كبيرة من مستخدمين واحدين
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1.1 - Access Control and Authentication 5.2.1 - Information Security Policies 5.3.1 - Data Protection and Privacy 5.4.1 - Incident Management
🔵 SAMA CSF
ID.AM-2 - Software Inventory PR.AC-1 - Access Control PR.DS-1 - Data Security DE.CM-1 - Detection and Analysis
🟡 ISO 27001:2022
A.5.1.1 - Policies for information security A.6.1.1 - Information security roles and responsibilities A.8.1.1 - User endpoint devices A.9.2.1 - User registration and de-registration A.9.4.3 - Password management A.12.2.1 - Restrictions on software installation A.14.2.1 - Secure development policy
📦 Affected Products / CPE 3 entries
discourse:discourse
discourse:discourse
discourse:discourse:2026.2.0
📊 CVSS Score
6.5
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityN — None / Network
AvailabilityN — None / Network
📋 Quick Facts
Severity Medium
CVSS Score6.5
CWECWE-89
Exploit No
Patch ✗ No
Published 2026-02-26
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
6.2
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-89
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