CVE-2026-1276 in QRadar SIEM
Summary
by MITRE • 03/19/2026
IBM QRadar SIEM 7.5.0 through 7.5.0 Update Package 14 is vulnerable to cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
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Analysis
by VulDB Data Team • 03/23/2026
IBM QRadar SIEM version 7.5.0 through 7.5.0 Update Package 14 contains a cross-site scripting vulnerability that represents a significant security weakness in the platform's web interface. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is a prevalent web application security flaw that occurs when applications fail to properly validate or escape user input before rendering it in web pages. The vulnerability specifically affects the web user interface of the QRadar SIEM platform, making it susceptible to malicious code injection attacks that can compromise the integrity of the security monitoring environment.
The technical flaw manifests when authenticated users can inject arbitrary JavaScript code into the web interface, which then executes in the context of other users' sessions. This authentication bypass mechanism allows an attacker to manipulate the intended functionality of the web application by embedding malicious scripts that can capture user credentials, session tokens, or other sensitive information. The vulnerability is particularly concerning because it operates within a trusted session environment, meaning that the injected code can leverage existing authentication and authorization contexts to perform actions that would otherwise be restricted.
The operational impact of this vulnerability extends beyond simple script execution, as it creates a potential pathway for credential theft and session hijacking within the QRadar environment. Attackers can exploit this weakness to capture login credentials, steal session cookies, or manipulate the security information and event management data that QRadar processes. This compromise can lead to unauthorized access to critical security monitoring functions, potentially allowing attackers to view, modify, or delete security events and logs. The vulnerability affects the integrity of the SIEM platform's security posture, as it undermines the trust model that security analysts rely upon when using the system for threat detection and incident response activities.
Organizations using affected IBM QRadar SIEM versions should implement immediate mitigations to address this vulnerability. The primary recommendation involves applying the latest security updates and patches provided by IBM to remediate the cross-site scripting flaw. Network segmentation and monitoring of web application traffic can help detect potential exploitation attempts, while implementing strict input validation and output encoding measures can prevent similar vulnerabilities from occurring in other components of the system. Additionally, security administrators should conduct thorough audits of user permissions and session management to ensure that compromised sessions do not lead to broader system access. This vulnerability aligns with ATT&CK technique T1566.001 for credential access through social engineering and T1071.004 for application layer protocol usage, making it a critical concern for organizations that depend on QRadar for security operations and threat detection. The vulnerability demonstrates the importance of maintaining current security patches and implementing comprehensive input sanitization measures to prevent unauthorized code execution in web-based security platforms.