CVE-2025-9878 buildwps CVE debrief

Who should care

Defenders responsible for WordPress installations with the PPWP – Password Protect WordPress plugin should assess exposure and prioritize verification and updates. This includes reviewing the plugin version, updating to the latest version if necessary, and implementing input sanitization and output escaping for user-supplied attributes.

Why it matters

The PPWP – Password Protect WordPress plugin vulnerability requires verification and updates to prevent potential Stored Cross-Site Scripting attacks, impacting defenders responsible for WordPress installations with this plugin.

• Potential Stored Cross-Site Scripting attacks against authenticated attackers with contributor-level access and above
• Possible injection of arbitrary web scripts in pages that will execute whenever a user accesses an injected page

Technical summary

The PPWP – Password Protect WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'ppwp' shortcode in all versions up to, and including, 1.9.21 due to insufficient input sanitization and output escaping on user supplied attributes. This vulnerability allows authenticated attackers with contributor-level access and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerability requires verification and updates to prevent potential Stored Cross-Site Scripting attacks.

Defensive priority

Defenders should prioritize verifying and updating the PPWP – Password Protect WordPress plugin to prevent potential Stored Cross-Site Scripting attacks.

Recommended defensive actions

• Verify and update the PPWP – Password Protect WordPress plugin to the latest version
• Implement input sanitization and output escaping for user-supplied attributes
• Monitor for potential Stored Cross-Site Scripting attacks
• 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 CVE record and NVD vulnerability detail page provide information on the vulnerability, including its description, CVSS score, and affected versions. The vulnerability has been reported in versions up to, and including, 1.9.21 of the PPWP – Password Protect WordPress plugin. Defenders should verify the plugin version and update to the latest version if necessary. The CVE record was published on 2026-08-25T03:16:54.540Z and has not been modified since then.

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.