CVE-2026-113689 in IT Service Management Suite
Summary
by MITRE • 10/29/2026
Stored cross-site scripting in the SmartIT work-notes feature of BMC IT Service Management Suite versions 25.3.01, 25.4.01, and 26.1.01 allows authenticated users to execute stored scripts in other users' browsers.
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Analysis
by VulDB Data Team • 10/29/2026
The vulnerability identified as a Stored Cross-Site Scripting (XSS) flaw within the SmartIT work-notes feature of BMC IT Service Management Suite versions 25.3.01, 25.4.01, and 26.1.01 represents a significant security risk to enterprise service management environments. This specific vulnerability allows authenticated users to inject malicious client-side scripts into web pages viewed by other users. Unlike reflected XSS attacks that require tricking a user into clicking a crafted link, stored XSS persists on the target server, meaning the payload is saved in the application's database and executed automatically whenever the affected page is loaded by any authorized user who views the compromised work note. This persistence mechanism amplifies the severity of the issue as it enables automated attacks against multiple victims without further interaction from the attacker after the initial injection.
From a technical perspective, the flaw resides in how the SmartIT application processes and renders input data within its work-notes module. The system fails to adequately sanitize or encode user-supplied content before storing it for later retrieval and display. When an authenticated user submits a work note containing malicious JavaScript code, the backend accepts this input without validating whether the characters are safe for HTML rendering. Consequently, when another administrator or support agent opens the ticket associated with that work note, their browser interprets the stored script as legitimate content from the trusted domain of the BMC IT Service Management Suite. This context confusion allows the injected scripts to execute within the security privileges of the victim's session, effectively bypassing same-origin policy protections and granting the attacker a foothold within the user's active session.
The operational impact of this vulnerability is substantial due to the high-privilege nature of typical users interacting with IT service management tools. Administrators and support staff often have access to sensitive organizational data, including incident details, customer information, configuration items, and internal workflows. An attacker exploiting this flaw can perform actions such as stealing session cookies or authentication tokens, which could lead to full account takeover. Furthermore, the malicious scripts can manipulate the Document Object Model of the application interface, potentially redirecting users to phishing sites designed to harvest credentials, logging keystrokes entered into forms, or performing unauthorized state-changing requests on behalf of the victim. This capability undermines the integrity and confidentiality of the entire IT service management platform, as trust in the system's ability to protect user data is compromised.
This vulnerability aligns with Common Weakness Enumeration identifier CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. Specifically, it falls under stored XSS where malicious scripts are permanently stored within target servers. In terms of the MITRE ATT&CK framework, this exploitation technique maps to T1059 Command and Control via Application Layer Protocol or more directly to T1189 Drive-by Client Side Code Execution if the script triggers automatic downloads, but primarily it facilitates credential harvesting which relates to T1078 Valid Accounts. The persistence of the payload in the database also reflects a failure in input validation principles that are critical for secure software development lifecycle practices.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. BMC has released patches for versions 25.3.01, 25.4.01, and 26.1.01 to address this specific flaw; organizations should prioritize applying these updates as soon as possible. In the interim, if patching is not immediately feasible, administrators can implement web application firewall rules that detect and block common XSS payloads in HTTP requests targeting the work-notes endpoint. Additionally, enabling strict Content Security Policy headers can help mitigate the impact by restricting the sources from which scripts are allowed to execute, although this must be configured carefully to avoid breaking legitimate functionality of the SmartIT interface. Developers should also review input validation logic across all user-facing features to ensure that output encoding is applied consistently whenever data is rendered in HTML contexts, thereby preventing similar vulnerabilities in other modules of the suite.