CVE-2026-78149 Smart Post CVE debrief

Who should care

WordPress site administrators and security teams should assess exposure, prioritize updating the Smart Post plugin to version 4.0.8 or later, and verify post content security to prevent exploitation. This vulnerability allows unauthenticated users to access protected post content and passwords, posing a medium priority risk for site administrators and security teams.

Why it matters

CVE-2026-78149 allows unauthenticated users to read protected post content and passwords in the Smart Post WordPress plugin. WordPress site administrators and security teams should assess exposure, prioritize updating the plugin, and verify post content security.

• Unauthenticated users can access protected post content
• Passwords for protected posts may be exposed
• Site administrators must update the plugin to prevent exploitation
• Verification of plugin version and post content security is necessary

Technical summary

The Smart Post WordPress plugin before 4.0.8 does not check whether a post is password protected before returning its content and its stored password through an unauthenticated AJAX action, allowing unauthenticated users to read protected post content and the password that guards it. This vulnerability affects WordPress site administrators and security teams, who should assess exposure and prioritize updating the Smart Post plugin to prevent exploitation.

Defensive priority

Medium priority for WordPress site administrators and security teams

Recommended defensive actions

• Review and update the Smart Post WordPress plugin to version 4.0.8 or later
• Restrict access to sensitive post content and passwords
• Monitor for potential exploitation attempts
• Verify plugin version and assess exposure
• Review post content security with caution
• Track exceptions and retest remediated assets
• Confirm whether affected product deployments exist in managed environments

Evidence notes

The Smart Post WordPress plugin before 4.0.8 does not check whether a post is password protected before returning its content and its stored password through an unauthenticated AJAX action. This issue allows unauthenticated users to read protected post content and the password that guards it. Defenders should verify plugin versions, assess exposure, and review post content security with caution due to potential evidence limitations in public sources.

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.