CVE-2026-101160 WordPress.org CVE debrief

Who should care

Defenders responsible for WordPress sites using the WP Ultimate Review plugin should assess exposure and prioritize updating the plugin to version 2.4.4 or later. This includes operators, platform administrators, vulnerability management teams, and security teams who need to ensure the security and availability of their WordPress sites.

Why it matters

The WP Ultimate Review plugin vulnerability allows unauthenticated users to cause a persistent denial of service on WordPress sites using the plugin, impacting site availability and user experience. Defenders should prioritize verifying and updating the plugin to version 2.4.4 or later.

• persistent denial of service attacks against WordPress sites using the vulnerable plugin
• potential impact on site availability and user experience
• requirement to verify and update the plugin to prevent exploitation

Technical summary

The WP Ultimate Review WordPress plugin before 2.4.4 does not validate that a submitted review rating is numeric before storing it and later using it in numeric operations when rendering reviews, allowing unauthenticated users to make the reviewed content fail with a fatal error for all visitors until the review is removed (a persistent denial of service), when user reviews are enabled. This vulnerability impacts site availability and user experience, and defenders should prioritize verifying and updating the plugin to version 2.4.4 or later.

Defensive priority

Defenders should prioritize verifying and updating the WP Ultimate Review plugin to version 2.4.4 or later to prevent persistent denial of service attacks.

Recommended defensive actions

• Verify the WP Ultimate Review plugin version and update to 2.4.4 or later if necessary
• Monitor for and remove any existing malicious reviews
• Implement additional security measures to prevent unauthorized access to the WordPress site
• 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 entry provide limited information about the vulnerability, with the primary source being the WPScan reference. The WP Ultimate Review WordPress plugin before 2.4.4 does not validate that a submitted review rating is numeric before storing it and later using it in numeric operations when rendering reviews, allowing unauthenticated users to make the reviewed content fail with a fatal error for all visitors until the review is removed (a persistent denial of service), when user reviews are enabled. Defenders should

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.