CVE-2026-94387 in Aureus ERP
Summary
by MITRE • 09/21/2026
Aureus ERP before 1.6.0 contains a stored cross-site scripting vulnerability in the Chatter field-change log where old_value and new_value entries are rendered without proper escaping. Any user permitted to edit tracked text fields can inject malicious markup that executes when other users, including administrators, view the record's Chatter panel.
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Analysis
by VulDB Data Team • 09/21/2026
The identified security flaw resides within Aureus ERP versions prior to 1.6.0 and is classified as a stored cross-site scripting vulnerability affecting the application's chatter field-change log functionality. This specific component tracks modifications made to text fields, capturing both the old value and the new value of any edited data for audit and collaboration purposes. The core technical deficiency lies in the server-side rendering logic which fails to properly sanitize or escape user-supplied input before embedding it into HTML responses. Specifically, when a record is updated, the system stores the raw input strings without applying necessary encoding mechanisms such as HTML entity encoding or context-aware escaping. Consequently, if an attacker injects malicious JavaScript code snippets into these tracked fields, that payload becomes permanently stored in the database associated with the specific record entry rather than being transiently passed via URL parameters or form submissions.
This architectural design choice significantly amplifies the severity of the vulnerability compared to reflected cross-site scripting attacks because the malicious content persists on the server and is served to multiple victims over time without requiring further interaction from the attacker after the initial injection. Any user account with permissions to edit tracked text fields can act as an entry point for this attack vector. The operational impact is severe, particularly given that administrators are among the users who frequently review these change logs to monitor system modifications and data integrity. When an administrator or any other authorized user views the record's chatter panel, their browser parses the unescaped malicious markup embedded in the old_value or new_value fields. This execution context allows the injected script to run with the privileges of the viewing user, effectively granting the attacker a foothold within the victim's authenticated session.
The exploitation potential extends beyond simple defacement or alert boxes, as attackers can leverage this vector for sophisticated attacks such as session hijacking by stealing authentication cookies, credential harvesting through fake login forms embedded in the payload, or performing actions on behalf of the user via cross-site request forgery techniques facilitated by the stolen context. The 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. Furthermore, from a tactical perspective within the MITRE ATT&CK framework, this flaw facilitates initial access and potentially credential acquisition through techniques associated with Client-side Injection and Browser Session Manipulation. The persistence mechanism inherent in stored XSS means that even if the attacker's account is disabled or deleted after injection, the malicious payload remains active until the vulnerable code path is patched or the specific record data is manually cleaned from the database.
Mitigation strategies must prioritize immediate patching of Aureus ERP to version 1.6.0 or later where this issue has been resolved by implementing robust input validation and output encoding practices. Developers should enforce strict allow-list based input filtering for all text fields that are subsequently rendered in HTML contexts, ensuring that only expected alphanumeric characters and safe punctuation are accepted while rejecting script tags, event handlers, and other executable code patterns. More critically, the rendering engine must apply context-sensitive escaping to ensure that any special characters within user data are converted into their corresponding HTML entities before being inserted into the DOM structure of the chatter panel. This ensures that browsers interpret the content as plain text rather than executable markup regardless of what was stored in the database.
In addition to code-level fixes, organizations should implement defense-in-depth measures such as Content Security Policy headers configured with strict directives like script-src self to restrict the sources from which scripts can be loaded and executed within the application environment. This acts as a safety net that can neutralize many cross-site scripting attacks even if input validation fails or is bypassed. Regular security audits focusing on data flow analysis for all user-controllable inputs are recommended to identify similar patterns of improper output encoding across other modules of the ERP system. Monitoring logs for unusual spikes in chatter activity involving special characters may also help detect ongoing exploitation attempts before significant damage occurs, allowing incident response teams to isolate affected records and rotate credentials for users who viewed compromised pages during the window of exposure.