CVE-2025-53526 in WeGIA
Summary
by MITRE • 07/07/2025
WeGIA is a web manager for charitable institutions. An XSS Injection vulnerability was identified in novo_memorando.php. After the memo was submitted, the vulnerability was confirmed by accessing listar_memorandos_antigos.php. Upon loading this page, the injected script was executed in the browser. This vulnerability is fixed in 3.4.3.
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Analysis
by VulDB Data Team • 07/11/2025
The CVE-2025-53526 vulnerability represents a cross-site scripting flaw in WeGIA, a web management platform designed for charitable institutions. This vulnerability specifically resides within the novo_memorando.php component, which handles memo submission functionality. The flaw allows malicious actors to inject persistent script code that executes when users access the listar_memorandos_antigos.php page, demonstrating a classic persistent cross-site scripting attack vector. The vulnerability affects the core operational integrity of the platform by enabling unauthorized code execution within user browsers, potentially compromising the confidentiality and integrity of sensitive institutional data.
The technical implementation of this vulnerability follows a standard persistent XSS pattern where user input is inadequately sanitized or escaped before being stored and subsequently rendered in the web interface. When a user submits a memo through novo_memorando.php, the system fails to properly validate or escape special characters in the memo content, allowing script tags or other malicious payloads to be stored in the backend database. Upon subsequent access to listar_memorandos_antigos.php, the stored content is directly embedded into the HTML response without proper output encoding, creating an execution environment for the injected scripts. This vulnerability type maps directly to CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental web application security weakness categorized under the OWASP Top Ten as a critical threat to web application security.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with potential access to sensitive institutional data and user sessions. An attacker could inject scripts that steal session cookies, redirect users to malicious sites, or perform unauthorized actions within the application on behalf of legitimate users. The vulnerability affects all users of the WeGIA platform who have access to the memo submission and viewing functionality, potentially compromising the privacy of charitable institution communications and data. Given that this platform serves charitable organizations, the attack surface includes sensitive donor information, institutional communications, and potentially financial data. The vulnerability represents a significant risk to data integrity and user trust, as demonstrated by the fact that it was confirmed to execute scripts upon page loading rather than requiring complex attack scenarios.
The remediation for CVE-2025-53526 was implemented in version 3.4.3 of the WeGIA platform, which likely incorporated proper input validation and output encoding mechanisms. Effective mitigation strategies should include implementing strict input sanitization routines that filter or escape special characters before storing user content, applying proper HTML entity encoding when rendering user-supplied data in web responses, and implementing Content Security Policy headers to limit script execution. Organizations using this platform should immediately upgrade to version 3.4.3 or later to address this vulnerability. Additionally, implementing regular security testing including dynamic application security testing and manual penetration testing would help identify similar vulnerabilities in other components of the platform. The ATT&CK framework categorizes this vulnerability under T1213 - Data from Information Repositories, as it enables unauthorized access to stored institutional data through web application exploitation techniques that align with the broader category of web application attacks targeting data integrity and confidentiality.