Vulnerability Description
The Premmerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'premmerce_wizard_actions' AJAX endpoint in all versions up to, and including, 1.3.20. This is due to missing capability checks and insufficient input sanitization and output escaping on the `state` parameter. This makes it possible for authenticated attackers, with subscriber level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page (the Premmerce Wizard admin page).
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Admin/Admin
- https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Admin/Handl
- https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Api/WizardA
- https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/views/admin/tab
- https://plugins.trac.wordpress.org/changeset/3464825/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/90b2a644-19a0-43a1-8ff
FAQ
What is CVE-2026-0555?
CVE-2026-0555 is a vulnerability with a CVSS score of 6.4 (MEDIUM). The Premmerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'premmerce_wizard_actions' AJAX endpoint in all versions up to, and including, 1.3.20. This is due to missing ca...
How severe is CVE-2026-0555?
CVE-2026-0555 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-0555?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.