Medium severity4.4NVD Advisory· Published Feb 19, 2026· Updated Apr 15, 2026
CVE-2026-1043
CVE-2026-1043
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.
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Affected products
1- Range: <=2.4
Patches
Vulnerability mechanics
References
5- plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/tags/2.4/postmarkapp.phpnvd
- plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.phpnvd
- plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.phpnvd
- plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.phpnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/80b03e81-6660-483a-9150-e6075b7bffbdnvd
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