CVE-2025-15489 Passster CVE debrief

Who should care

Administrators and users of the Passster WordPress plugin, as well as security teams responsible for monitoring and patching vulnerabilities in WordPress plugins, should review this CVE record. They should verify that the Passster WordPress plugin is properly configured and up-to-date, and monitor for any suspicious activity related to the Passster WordPress plugin. Additionally, operators of WordPress platforms and security teams should assess their exposure and prioritize patching based on their risk profile and current threat landscape. Vulnerability management teams should incorporate this CVE into their regular scanning and patching processes to ensure timely mitigation of this vulnerability across their environments. Security teams should also review compensating controls for exposed systems while remediation is scheduled and verified, and check relevant monitoring, detection, and logs for exposed assets that need extra review.

Technical summary

The Passster WordPress plugin before 4.2.24 does not handle input properly in an AJAX action, allowing unauthenticated users to retrieve the value of password protected content. The vulnerability has a CVSS score of 5.3 and is classified as MEDIUM severity.

Defensive priority

Medium priority due to the CVSS score of 5.3 and the potential for unauthorized access to password-protected content.

Recommended defensive actions

• Review and apply the vendor's patch to update the Passster WordPress plugin to version 4.2.24 or later.
• Verify that the Passster WordPress plugin is properly configured and up-to-date.
• Monitor for any suspicious activity related to the Passster WordPress plugin.

Evidence notes

The WPScan vulnerability reference explicitly names Passster as the vendor and the affected plugin with version constraint. Limited information is available about the specific details of the vulnerability. To verify, defenders should review the official CVE record and vendor advisory for affected versions and update guidance. Additional details may be found in vulnerability reports from WPScan.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.