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CVE-2026-42253

Medium

CWE-79 — Weakness Type

                    Published: Jun 1, 2026                      ·  Modified: Jun 4, 2026                      ·  Source: NVD                

CVSS v3

6.1

🔗 NVD Official

📄 Description (English)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache ActiveMQ, Apache ActiveMQ Web.

The MessageServlet in the ActiveMQ web console API copies every JMS message
property into an HTTP response header without any validation. This can allow overwriting and injecting security headers by setting them on JMS messages that are returned by the servlet.

This issue affects Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ Web: before 5.19.7, from 6.0.0 before 6.2.6.

Users are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue. The MessageServlet has now been deprecated and disabled by default.

🤖 AI Executive Summary

Apache ActiveMQ's MessageServlet copies JMS message properties into HTTP response headers without validation, allowing attackers to inject malicious headers including XSS payloads. This vulnerability affects versions before 5.19.7 and 6.0.0-6.2.5, with remediation available through upgrading to patched versions.

📄 Description (Arabic)

تحتوي ثغرة في Apache ActiveMQ على عيب في التحقق من صحة المدخلات حيث ينسخ MessageServlet جميع خصائص رسائل JMS مباشرة إلى رؤوس استجابة HTTP. يمكن للمهاجمين استغلال هذا لحقن رؤوس ضارة بما في ذلك رؤوس الأمان والبرامج النصية الضارة. الإصدارات المتأثرة تشمل ActiveMQ 5.x قبل 5.19.7 و6.x قبل 6.2.6.

🤖 ملخص تنفيذي (AI)

خادم رسائل ActiveMQ ينسخ خصائص رسائل JMS إلى رؤوس استجابة HTTP دون التحقق، مما يسمح بحقن رؤوس ضارة. يؤثر على الإصدارات السابقة للإصدار 5.19.7 و6.0.0-6.2.5، مع توفر الإصلاح من خلال الترقية.

🤖 AI Intelligence Analysis Analyzed: Jun 1, 2026 20:57

🇸🇦 Saudi Arabia Impact Assessment

Saudi Relevance: high

🏢 Affected Saudi Sectors

banking telecom energy government healthcare

🎯 MITRE ATT&CK Techniques

T1190 T1071 T1598

⚖️ Saudi Risk Score (AI)

6.0

/ 10.0

🔧 Remediation Steps (English)

Immediately upgrade Apache ActiveMQ to version 5.19.7 or 6.2.6 or later. If immediate upgrade is not possible, disable the MessageServlet in the web console configuration. Implement Web Application Firewall (WAF) rules to detect and block suspicious header injection attempts. Monitor JMS message properties for malicious content and restrict access to the ActiveMQ web console to trusted networks only.

🔧 خطوات المعالجة (العربية)

قم بالترقية الفورية إلى Apache ActiveMQ الإصدار 5.19.7 أو 6.2.6 أو أحدث. إذا لم تكن الترقية الفورية ممكنة، قم بتعطيل MessageServlet في إعدادات وحدة التحكم. طبق قواعد جدار حماية تطبيقات الويب لكشف محاولات حقن الرؤوس المريبة. راقب خصائص رسائل JMS بحثاً عن محتوى ضار وقيد الوصول إلى وحدة تحكم ActiveMQ للشبكات الموثوقة فقط.

📋 Regulatory Compliance Mapping

🟢 NCA ECC 2024

A.9.2.1 A.9.2.5 A.14.2.1

🔵 SAMA CSF

ID.RA-1 PR.DS-1 PR.IP-1

🟡 ISO 27001:2022

A.6.1.1 A.12.6.1 A.14.2.1

🔗 References & Sources 2

🔗

https://lists.apache.org/thread/j9vmlc410ht5f28fc98gx75jcbq62j00

security@apache.org

Mailing List Vendor Advisory

🔗

http://www.openwall.com/lists/oss-security/2026/05/31/17

af854a3a-2127-422b-91ae-364da2661108

Mailing List Third Party Advisory

📦 Affected Products / CPE 4 entries

apache:activemq

apache:activemq_web

📊 CVSS Score

6.1

/ 10.0 — Medium

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionR — Required

ScopeC — Changed

ConfidentialityL — Low / Local

IntegrityL — Low / Local

AvailabilityN — None / Network

📋 Quick Facts

Severity Medium

CVSS Score6.1

CWECWE-79

EPSS0.24%

Exploit No

Patch ✗ No

Published 2026-06-01

Source Feed nvd

🇸🇦 Saudi Risk Score

6.0

/ 10.0 — Saudi Risk

Priority: MEDIUM

🏷️ Tags

CWE-79

🏢 Vendor Advisories

🔗 https://lists.apache.org/thread/j9vmlc410ht5f28fc98g...

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

CVE-2026-42253

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