CVE-2024-5829 in Avue
Summary
by MITRE • 06/11/2024
A vulnerability classified as problematic was found in smallweigit Avue up to 3.4.4. Affected by this vulnerability is an unknown functionality of the component avueUeditor. The manipulation leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-267895. NOTE: The code maintainer explains, that "rich text is no longer maintained".
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Analysis
by VulDB Data Team • 06/12/2026
This vulnerability resides within the avueUeditor component of smallweigit Avue version 3.4.4 and earlier, representing a cross site scripting flaw that poses significant security risks to web applications utilizing this rich text editor functionality. The vulnerability stems from inadequate input validation and output encoding mechanisms within the editor's processing pipeline, allowing malicious actors to inject malicious scripts through carefully crafted input that bypasses security controls. The issue affects the core rich text editing functionality that handles user-generated content, making it particularly dangerous as it can be exploited by attackers who do not require direct access to the system but can manipulate the application through web interfaces.
The technical exploitation occurs when user input containing malicious javascript code is processed by the avueUeditor component and subsequently rendered in web pages without proper sanitization. This creates a persistent cross site scripting vector where attackers can execute arbitrary code in the context of victim users' browsers, potentially leading to session hijacking, data theft, or redirection to malicious sites. The vulnerability's remote attack vector means that exploitation can occur through web-based interfaces without requiring physical access to the target system, making it particularly dangerous for web applications that process user input through rich text editors. The vulnerability has been publicly disclosed and is actively being used in the wild, indicating that threat actors have already developed working exploits against this weakness.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to establish persistent access to affected systems through session manipulation and credential theft. Attackers can leverage this vulnerability to gain unauthorized access to user accounts, escalate privileges, or perform data exfiltration from applications that rely on the vulnerable rich text editor functionality. The fact that the code maintainer has indicated that "rich text is no longer maintained" suggests that the vulnerability may not receive future patches or updates, leaving affected systems permanently exposed to this threat. Organizations using this component should consider the vulnerability as a critical security concern given its public disclosure status and active exploitation.
Mitigation strategies should focus on immediate input validation and output encoding measures to prevent malicious script injection, including implementing comprehensive content security policies and sanitizing all user-generated content before processing. Organizations should also consider implementing web application firewalls to detect and block malicious requests targeting this vulnerability, while conducting thorough security assessments to identify all instances where the vulnerable component is deployed. The lack of future maintenance for the rich text functionality further emphasizes the need for immediate remediation through either complete removal of the vulnerable component or implementation of robust third-party security controls. This vulnerability aligns with CWE-79 which specifically addresses cross site scripting flaws, and represents a clear violation of ATT&CK technique T1213 which covers data from information repositories, potentially enabling attackers to harvest sensitive user data through the compromised rich text editor functionality.