CVE-2026-19056 ProSolution CVE debrief

Who should care

Administrators of WordPress installations using the ProSolution WP Client plugin should be aware of this vulnerability and take steps to update the plugin to prevent reflected Cross-Site Scripting attacks. Additionally, security teams and vulnerability management personnel should review the affected plugin and assess their exposure to potential attacks. Operators of affected systems should prioritize updating the plugin and monitor for suspicious activity on administrative pages.

Technical summary

The ProSolution WP Client WordPress plugin before version 2.0.11 does not sanitize and escape a parameter before reflecting it into an HTML attribute on one of its administrative pages, leading to reflected Cross-Site Scripting that runs in the session of an administrator induced to submit a crafted request. This vulnerability affects WordPress installations using the ProSolution WP Client plugin. The plugin's failure to properly sanitize input allows an attacker to inject malicious scripts, potentially leading to unauthorized actions within the administrative interface.

Defensive priority

Administrators should prioritize updating the ProSolution WP Client WordPress plugin to version 2.0.11 or later to prevent reflected Cross-Site Scripting attacks.

Recommended defensive actions

• Update the ProSolution WP Client WordPress plugin to version 2.0.11 or later
• Verify that the plugin is properly configured and up-to-date
• Monitor for suspicious activity on the administrative pages
• 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 indicates that the ProSolution WP Client WordPress plugin before version 2.0.11 does not sanitize and escape a parameter before reflecting it into an HTML attribute, leading to reflected Cross-Site Scripting. The NVD entry is currently Deferred. Further verification is needed to confirm affected deployments and assess potential impact. Defenders should review official advisories and monitor for suspicious activity on administrative pages.

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.