CVE-2026-2390 codesupplyco CVE debrief

Who should care

WordPress site administrators and security teams should assess exposure and prioritize remediation. This vulnerability affects WordPress deployments with the Powerkit plugin installed. Site owners and security teams must evaluate their environments for potential exposure, especially if Contributor-level access or higher is granted to users. The vulnerability's impact on site security and data integrity necessitates prompt attention and remediation.

Why it matters

CVE-2026-2390 is a Stored Cross-Site Scripting vulnerability in the Powerkit plugin for WordPress. Authenticated attackers with Contributor-level access can inject arbitrary web scripts, which execute when a user accesses an injected page. WordPress site administrators and security teams should assess exposure and prioritize remediation.

• Authenticated attackers with Contributor-level access can inject arbitrary web scripts
• Injected scripts execute when a user accesses an injected page
• Potential for lateral movement and exploitation of other vulnerabilities

Technical summary

The Powerkit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Lazy Load module's image processing in all versions up to, and including, 3.0.4. This is due to the 'content_process_images' function using a flawed regex-based HTML attribute parser. The vulnerability allows authenticated attackers with Contributor-level access and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This could lead to potential lateral movement and exploitation of other vulnerabilities. WordPress site administrators and security teams should assess exposure and prioritize remediation.

Defensive priority

Medium priority for WordPress site administrators and security teams

Recommended defensive actions

• Update the Powerkit plugin to a version beyond 3.0.4
• Restrict Contributor-level access and above to trusted users
• Monitor for suspicious page changes and injected scripts
• 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 details on the vulnerability in the Powerkit plugin for WordPress. The vulnerability allows for Stored Cross-Site Scripting via the Lazy Load module's image processing.

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.