CVE-2026-1029 in Common Licensing
Summary
by MITRE • 09/18/2026
IBM Common Licensing Agent 9.0, Agent 9.0.0.1, Agent 9.0.0.2, ART 9.0, ART 9.0.0.1, and ART 9.0.0.2 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 09/18/2026
The IBM Common Licensing Agent versions 9.0, 9.0.0.1, and 9.0.0.2, along with the ART variants at corresponding version levels, contain a critical web application security flaw classified as cross-site scripting or stored XSS depending on implementation specifics. This vulnerability stems from insufficient input validation and sanitization mechanisms within the Web User Interface components of these licensing management tools. When an attacker crafts malicious script payloads and injects them into fields that are subsequently rendered by the browser without proper encoding, the web application fails to neutralize the active content before it is processed by the client-side environment. This failure allows arbitrary JavaScript code execution in the context of the vulnerable website, which fundamentally breaks the same-origin policy intended to isolate different websites from each other and prevent malicious scripts on one page from accessing data or functionality associated with another trusted site.
From a technical perspective, this flaw represents a classic injection vulnerability where user-supplied input is treated as executable code rather than safe data. The absence of robust output encoding ensures that any script tags, event handlers, or JavaScript expressions embedded in the input are interpreted directly by the victim's browser. This capability enables attackers to manipulate the Document Object Model dynamically, altering the intended functionality of the licensing agent interface. Such manipulation can range from defacing the user interface to more severe actions such as session hijacking, keylogging within the trusted domain, or performing unauthorized administrative actions on behalf of authenticated users. The severity is amplified by the fact that these agents often manage critical software license entitlements and may possess elevated privileges relative to standard end-user applications.
The operational impact of this vulnerability extends beyond mere cosmetic changes to the interface. Since cross-site scripting attacks are typically executed in the context of a trusted session, an attacker can exploit the victim's active authentication cookies or tokens to impersonate legitimate users. This leads directly to credentials disclosure and unauthorized access to sensitive licensing data. In enterprise environments where IBM software is deployed at scale, compromising these agents could allow adversaries to manipulate license counts, disable security features tied to licensing compliance, or pivot further into internal networks if the agent has network connectivity to other systems. The trust relationship between the user's browser and the application server is effectively subverted, allowing malicious scripts to exfiltrate sensitive information such as session identifiers, personal data, or configuration details that facilitate deeper system compromise.
This vulnerability aligns with Common Weakness Enumeration identifier CWE-79, which describes Improper Neutralization of Input During Web Page Generation known as Cross-site Scripting. It also maps to the MITRE ATT&CK framework under techniques such as Client-side Injection (T1059) and potentially Credential Access via Browser Session Hijacking if session tokens are stolen. To mitigate this risk, immediate patching to a version that addresses these input validation flaws is required. Administrators should ensure that all instances of IBM Common Licensing Agent and ART are updated to the latest secure releases provided by IBM. Additionally, implementing strict Content Security Policy headers can help restrict the execution of inline scripts even if similar vulnerabilities exist in other parts of the application stack. Regular security audits focusing on input validation logic for web interfaces serving administrative or sensitive data functions are recommended to prevent recurrence of such injection-based attacks.