CVE-2026-73033 Sucuri CVE debrief

Who should care

WordPress administrators and security teams responsible for maintaining Sucuri Security plugin installations should assess exposure and prioritize remediation to prevent potential site outages or malicious reinstallation. This includes reviewing compensating controls, monitoring for unusual activity, and ensuring timely updates to the plugin.

Why it matters

CVE-2026-73033 is a high-severity path traversal vulnerability in the Sucuri Security WordPress plugin that allows authenticated administrators to delete arbitrary files. WordPress administrators and security teams should assess exposure and prioritize remediation to prevent potential site outages or malicious reinstallation.

• Authenticated administrators can delete arbitrary files, potentially causing site outage or enabling malicious reinstallation.
• The vulnerability allows for manipulation of unsanitized file paths, which can lead to sensitive file deletion.

Technical summary

The Sucuri Security WordPress plugin through version 2.7.3 contains a path traversal vulnerability in the pageIntegritySubmission() method in src/integrity.lib.php. This allows authenticated administrators to delete arbitrary files by supplying directory traversal sequences in the sucuriscan_integrity parameter. The vulnerability is caused by unsanitized file paths, which can be manipulated to traverse outside the WordPress installation directory and invoke unlink() on sensitive files such as wp-config.php and .htaccess.

Defensive priority

High priority remediation is recommended for WordPress installations using the Sucuri Security plugin version 2.7.3 or earlier.

Recommended defensive actions

• Update the Sucuri Security WordPress plugin to a version beyond 2.7.3.
• Restrict access to the plugin's pageIntegritySubmission() method.
• Monitor for unusual file deletion activity on WordPress installations.
• 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 described in the CVE record and confirmed by the vendor. Limited details are available on potential exploitation or affected deployments. The CVE record was published on 2026-08-10T21:17:26.610Z and has not been modified since then. The vendor has provided guidance on updating the plugin to a version beyond 2.7.3. However, the exact number of affected deployments and the scope of potential exploitation remain unknown.

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.