CVE-2025-15001 fsylum CVE debrief

Who should care

WordPress administrators and users of the FS Registration Password plugin should assess exposure and prioritize remediation to prevent potential account takeovers. This includes reviewing plugin versions, updating passwords, and monitoring for suspicious activity. Security teams and vulnerability management teams should also review the CVE record and vendor guidance for remediation steps.

Why it matters

CVE-2025-15001 is a critical vulnerability in the FS Registration Password plugin for WordPress, allowing unauthenticated attackers to change arbitrary user passwords. WordPress administrators and users of this plugin should assess exposure and prioritize remediation to prevent potential account takeovers.

• Unauthenticated attackers can change arbitrary user passwords, including administrators.
• Attackers can leverage changed passwords to gain access to user accounts.
• Remediation priority is high due to the critical CVSS score of 9.8.
• Verification of plugin versions and user accounts is necessary.

Technical summary

The FS Registration Password plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 1.0.1. This is due to the plugin not properly validating a user's identity prior to updating their password. This makes it possible for unauthenticated attackers to change arbitrary user's passwords, including administrators, and leverage that to gain access to their account.

Defensive priority

High priority remediation is recommended for WordPress installations using the FS Registration Password plugin version 1.0.1 or earlier.

Recommended defensive actions

• Immediately update the FS Registration Password plugin to a version that fixes the vulnerability.
• Review and update passwords for all users, especially administrators.
• Monitor for suspicious password change attempts.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The vulnerability is confirmed in plugin version 1.0.1 and earlier through official sources and vendor information. Further verification and remediation guidance are necessary. The CVE record was published on 2026-01-06T05:16:04.443Z. The National Vulnerability Database (NVD) and CVE Program records provide additional details on this vulnerability. Security researchers have identified the issue through analysis of plugin code changes.

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.