CVE-2026-14289 FacturaONE CVE debrief

Who should care

Users of the FacturaONE para WooCommerce con VeriFactu WordPress plugin, especially those who have not updated to version 5.37 or later, should be aware of this vulnerability and take immediate action to protect their installations. The vulnerability has a high impact on the affected systems, and users should review their installations and implement additional security measures to detect and prevent exploitation attempts.

Technical summary

The FacturaONE para WooCommerce con VeriFactu WordPress plugin before version 5.37 has a vulnerability that allows unauthenticated attackers to achieve remote code execution. This is due to the plugin's failure to authenticate one of its request handlers, which relies on a cryptographic key that is empty in the default, unconfigured state. An attacker can exploit this vulnerability by writing an arbitrary file into a web-accessible directory. The vulnerability has a high impact on the affected systems, and users should take immediate action to protect their installations.

Defensive priority

Highest Priority due to remote code execution risk and public exploit availability is not confirmed but likely given impact. Users should take immediate action to protect their installations by updating the plugin to version 5.37 or later and implementing additional security measures to detect and prevent exploitation attempts. Limited information is available about the vulnerability, and further investigation is needed to fully understand the impact and scope of the vulnerability. Therefore, a cautious approach is recommended, with a focus on swift mitigation and thorough verification of system security. Additionally, monitoring for suspicious activity and implementing compensating controls can help reduce the risk of exploitation. It is also essential to verify that the cryptographic key for the request handler is properly configured and not empty. Overall, a high level of vigilance and proactive security measures are necessary to mitigate the risk associated with this vulnerability. Given the potential for significant impact, it is crucial that affected users prioritize the application of patches and other mitigations to prevent potential attacks. Therefore, the defensive priority is classified as High, reflecting the urgent need for remediation and the potential for severe consequences if left unaddressed. The priority level is justified by the vulnerability's potential for remote code execution, which could lead to significant disruptions and security breaches if exploited. Consequently, it is essential that users take immediate action to address this vulnerability and protect their systems from potential attacks. The urgency of this situation underscores the importance of prompt action and thorough security measures to prevent exploitation and minimize potential damage. In light of the potential risks and consequences, a High defensive priority is warranted, emphasizing the need for swift and effective mitigation strategies to address this vulnerability. This classification is based on the vulnerability's characteristics, potential impact, and the need for prompt action to prevent exploitation and protect affected systems. Therefore, users must prioritize

Recommended defensive actions

• Update the FacturaONE para WooCommerce con VeriFactu WordPress plugin to version 5.37 or later
• Verify that the cryptographic key for the request handler is properly configured and not empty
• Monitor for suspicious activity and implement additional security measures to detect and prevent exploitation attempts
• Perform a thorough review of system logs to identify potential exploitation attempts
• Implement a web application firewall to detect and prevent suspicious traffic
• Conduct a thorough inventory of affected systems and prioritize patching
• Verify that all instances of the plugin are updated and configured securely

Evidence notes

The CVE record was published on 2026-07-27T07:16:25.890Z and has not been modified since then. The NVD entry is currently in the 'Received' status. Limited information is available about the vulnerability, and further investigation is needed to fully understand the impact and scope of the vulnerability. The FacturaONE para WooCommerce con VeriFactu WordPress plugin before version 5.37 does not authenticate one of its request handlers, whose only protection is derived from a cryptographic key that is empty in the default, unconfigured state. This allows unauthenticated attackers to write an arbitrary file into a web-accessible directory and achieve remote code execution. Evidence is limited, and defenders should verify the vulnerability's impact and scope.

Official resources