CVE-2026-115806 codexonics CVE debrief

Who should care

Administrators and security teams responsible for WordPress installations using the Prime Mover – Backup and Migration plugin should assess exposure and prioritize remediation. This includes reviewing the plugin's version, verifying the presence of a POP chain in the Freemius library, and ensuring that compensating controls are in place. Security teams should also monitor for suspicious activity related to the Prime Mover plugin and WordPress comments.

Why it matters

CVE-2026-115806 is a critical vulnerability in the Prime Mover – Backup and Migration plugin for WordPress, allowing unauthenticated attackers to potentially inject malicious objects. Administrators and security teams should assess exposure, prioritize remediation, and monitor for suspicious activity.

• Potential for unauthenticated attackers to store malicious serialized objects.
• Possible security issues due to the presence of a POP chain in the plugin's Freemius library.
• Need for administrators to verify and update the plugin to a fixed version.
• Importance of monitoring for suspicious activity related to the Prime Mover plugin and WordPress comments.

Technical summary

The Prime Mover – Backup and Migration plugin for WordPress is vulnerable to PHP Object Injection due to deserialization of untrusted input in the migration search-and-replace routine. An unauthenticated attacker can exploit this by storing a crafted, base64-encoded serialized object in wp_comments.comment_content, which is then decoded and unserialized by the plugin during an administrator's export or restore routine, potentially leading to security issues.

Defensive priority

High priority for systems using the Prime Mover plugin, especially if administrators have access to the comment section.

Recommended defensive actions

• Update the Prime Mover plugin to a version that fixes the PHP Object Injection vulnerability.
• Restrict access to the comment section to prevent unauthenticated attackers from storing malicious serialized objects.
• Monitor for suspicious activity related to the Prime Mover plugin and WordPress comments.
• 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 detail page provide information on the vulnerability. Additional details are available in the source references provided by [email protected]. The Prime Mover – Backup and Migration plugin for WordPress is vulnerable to PHP Object Injection due to deserialization of untrusted input in the migration search-and-replace routine. This vulnerability allows unauthenticated attackers to potentially inject malicious objects. The plugin's bundled Freemius library contains a Property-Oriented Programming (POP) chain,

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.