Cross-site scripting in Premmerce
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-0555
- 2026-10-03 Alias added: GHSA-j5c2-jmjm-9ppm
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/90b2a644-19a0-43a1-8ff6-7486d7ef29b3?source=cve
- https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Admin/Admin.php?marks=41#L41
- https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Admin/Handlers/WizardHandler.php?marks=42,50,52#L42
- https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Api/WizardApi.php?marks=38#L38
- https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/views/admin/tabs/wizard.php?marks=30#L30
- https://plugins.trac.wordpress.org/changeset/3464825/
More Premmerce vulnerabilities
- TI-2024-18574 WordPress Premmerce Permalink Manager for WooCommerce plugin <= 2.3.10 - Local File Inclusion vulnerability CVSS 3.1HIGH 8.3
- TI-2026-39652 WordPress Premmerce Wishlist for WooCommerce plugin <= 1.1.11 - SQL Injection vulnerability CVSS 3.1CRITICAL 9.3
- TI-2026-06073 Unrestricted file upload in Premmerce Dev Tools CVSS 3.1HIGH 8.8
- TI-2024-20731 WordPress Premmerce Product Filter for WooCommerce plugin <= 3.7.2 - Broken Access Control vulnerability CVSS 3.1HIGH 8.8
- TI-2023-09587 WordPress Premmerce Redirect Manager Plugin <= 1.0.9 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
- TI-2023-09533 WordPress Premmerce Plugin <= 1.3.17 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
Sources
- CVE-2026-0555 · CVE Program
- CVE-2026-0555 · NVD
- FIRST EPSS
- GHSA-j5c2-jmjm-9ppm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences