The PostmarkApp Email Integrator plugin, up to version 2.4, contains a Cross-Site Request Forgery (CSRF) vulnerability (CVE-2025-31617). This vulnerability allows attackers to induce authenticated users to perform unintended actions via crafted requests. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and impacts on confidentiality, integrity, and availability. No patch or official fix details are currently available, and no known exploits have been reported. The product is not cloud-hosted, so remediation responsibility lies with the user or vendor.

Successful exploitation of this CSRF vulnerability could allow attackers to perform unauthorized actions on behalf of authenticated users, potentially leading to partial compromise of confidentiality, integrity, and availability of the affected system. The high CVSS score reflects these impacts. However, no known exploits in the wild have been reported to date.

Patch status is not yet confirmed—check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider implementing standard CSRF mitigations such as verifying anti-CSRF tokens and limiting exposure of the vulnerable functionality. Monitor vendor communications for updates on patches or official mitigations.