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4.4
PostmarkApp Email Integrator plugin for WordPress: Malicious code injection risk
CVE-2026-1043
Summary
The PostmarkApp Email Integrator plugin for WordPress may allow an attacker with Administrator access to inject malicious code on the plugin settings page, potentially affecting any user who views the page. This could lead to unauthorized actions or data exposure. Update to version 2.5 or later to fix the issue.
Original title
The PostmarkApp Email Integrator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin settings in versions up to, and including, 2.4. This is due to insufficient input s...
Original description
The PostmarkApp Email Integrator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin settings in versions up to, and including, 2.4. This is due to insufficient input sanitization and output escaping on the pma_api_key and pma_sender_address parameters. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the settings page.
nvd CVSS3.1
4.4
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
- https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/tags/2.4...
- https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/po...
- https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/po...
- https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/po...
- https://www.wordfence.com/threat-intel/vulnerabilities/id/80b03e81-6660-483a-915...
Published: 19 Feb 2026 · Updated: 11 Mar 2026 · First seen: 6 Mar 2026