PT-2026-6887 · WordPress · Premmerce Plugin

Athiwat Tiprasaharn · Published 2026-02-07 · Updated 2026-02-07 · CVE-2026-0555

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Premmerce plugin for WordPress versions up to and including 1.3.20

Description The Premmerce plugin for WordPress is susceptible to Stored Cross-Site Scripting through the premmerce wizard actions API endpoint. The issue stems from a lack of capability checks and inadequate input sanitization and output escaping on the state parameter. This allows authenticated attackers with subscriber-level access or higher to inject malicious web scripts into pages. These scripts will execute when a user accesses the affected page, specifically the Premmerce Wizard admin page.

Recommendations Update the Premmerce plugin to a version later than 1.3.20.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-0555

Affected Products

Premmerce Plugin

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2026-0555 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/90b2a644-19a0-43a1-8ff6-7486d7ef29b3?source=cve · Note
• https://twitter.com/CVEnew/status/2020061002490839154 · Twitter Post
• https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Api/WizardApi.php?marks=38#L38 · Note
• https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/views/admin/tabs/wizard.php?marks=30#L30 · Note
• https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Admin/Admin.php?marks=41#L41 · Note
• https://t.me/cveNotify/151243 · Telegram Post
• https://t.me/CVEtracker/44025 · Telegram Post
• https://plugins.trac.wordpress.org/changeset/3464825 · Note
• https://plugins.trac.wordpress.org/browser/premmerce/tags/1.3.20/src/Admin/Handlers/WizardHandler.php?marks=42,50,52#L42 · Note