CVE-2025-29154 is an HTML injection vulnerability identified in the lemeconsultoria HCM galera.app version 4.58.0. This vulnerability affects multiple components and endpoints within the galera.app platform, including various HR-related modules such as training requests, strategic perspectives, employee records, and resource management. The vulnerability allows an unauthenticated attacker to inject arbitrary HTML code into these endpoints, which can lead to the execution of arbitrary code in the context of the victim's browser. The CVSS 3.1 base score is 6.5, indicating a medium severity level. The attack vector is network-based (AV:N), requiring no privileges (PR:N) and no user interaction (UI:N), which increases the risk of exploitation. The vulnerability impacts confidentiality and integrity but does not affect availability. The CWE classification is CWE-77, which corresponds to Improper Neutralization of Special Elements used in a Command ('Command Injection'), suggesting that the injection could potentially lead to command execution or script injection. Although no known exploits are reported in the wild yet, the broad range of affected endpoints and the lack of authentication requirements make this a significant risk. The absence of patches at the time of publication further elevates the threat potential. The vulnerability could be leveraged to perform cross-site scripting (XSS)-like attacks, session hijacking, or unauthorized actions within the application, potentially compromising sensitive HR data and user credentials.

For European organizations using the lemeconsultoria HCM galera.app platform, this vulnerability poses a risk to the confidentiality and integrity of sensitive human capital management data, including employee records, training information, and strategic HR plans. Exploitation could lead to unauthorized disclosure of personal data, manipulation of HR records, and potential lateral movement within the corporate network if combined with other vulnerabilities. Given the GDPR regulations in Europe, any data breach involving personal employee information could result in significant legal and financial penalties. The ability to execute arbitrary code without authentication increases the risk of automated attacks and large-scale exploitation. Additionally, compromised HR systems can disrupt business operations and damage organizational reputation. The vulnerability's presence in multiple endpoints increases the attack surface, making it easier for attackers to find exploitable vectors. Organizations relying on this software for critical HR functions must consider the potential for insider threat exploitation or external attackers gaining foothold through this vulnerability.

1. Immediate mitigation should include implementing web application firewalls (WAFs) with custom rules to detect and block suspicious HTML or script injection attempts targeting the affected endpoints. 2. Conduct a thorough code review and input validation enhancement on all affected endpoints to ensure proper sanitization and encoding of user-supplied data, preventing injection of malicious HTML or scripts. 3. Apply strict Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential injection attacks. 4. Monitor application logs and network traffic for unusual patterns indicative of exploitation attempts, such as unexpected input payloads or anomalous user behavior. 5. Engage with the vendor or development team to obtain patches or updates addressing this vulnerability as soon as they become available. 6. Until patches are applied, consider restricting access to the affected application modules to trusted internal networks or authenticated users only, if feasible. 7. Educate HR and IT staff about the risks and signs of exploitation to enhance detection and response capabilities. 8. Regularly back up HR data and verify the integrity of backups to enable recovery in case of compromise.