CVE-2025-62099 identifies a missing authorization vulnerability (CWE-862) in the Approveme Signature Add-On for Gravity Forms, a WordPress plugin used to facilitate digital signatures within forms. The vulnerability stems from improperly configured access control mechanisms, allowing users with limited privileges (PR:L) to perform actions that should be restricted, leading to unauthorized modifications of signature-related data. The flaw affects all versions up to 1.8.6. The CVSS 3.1 base score is 4.3, reflecting a medium severity level, with an attack vector of network (AV:N), low attack complexity (AC:L), requiring privileges but no user interaction (UI:N). The impact is limited to integrity (I:L), with no confidentiality or availability impact. No patches are currently linked, and no known exploits are reported in the wild. The vulnerability could be exploited remotely by authenticated users to alter signature data or related workflows, potentially undermining the validity of signed documents and causing operational or compliance issues. The add-on is commonly used in WordPress environments where digital signatures are integrated into business processes, making the vulnerability relevant for organizations relying on these workflows. The lack of proper authorization checks indicates a design or implementation flaw in the access control logic of the plugin.

For European organizations, the primary impact is on data integrity within digital signature workflows managed by the Approveme Signature Add-On. Unauthorized modification of signature data can lead to invalid or fraudulent documents, undermining legal and regulatory compliance, especially in sectors like finance, legal, and public administration where digital signatures are critical. This could result in reputational damage, contractual disputes, or regulatory penalties. Since the vulnerability requires some level of user privileges, insider threats or compromised accounts pose a significant risk. The absence of confidentiality or availability impact limits the scope to integrity concerns, but given the importance of signatures, this remains a critical business risk. Organizations heavily reliant on WordPress and this plugin for document signing are particularly vulnerable. The lack of known exploits suggests a window for proactive mitigation before active attacks emerge.

1. Monitor vendor channels closely for official patches or updates addressing CVE-2025-62099 and apply them promptly once available. 2. Conduct an immediate audit of user roles and permissions within WordPress environments using the Signature Add-On to ensure the principle of least privilege is enforced. 3. Implement compensating controls such as enhanced logging and monitoring of signature-related actions to detect unauthorized modifications early. 4. Restrict access to the plugin’s administrative and signature management interfaces to trusted personnel only. 5. Consider temporary disabling or limiting the use of the Signature Add-On if critical until a patch is applied. 6. Educate users about the risks of privilege misuse and enforce strong authentication mechanisms to reduce the risk of account compromise. 7. Review and strengthen overall WordPress security posture, including timely updates of core and plugins, to reduce attack surface.