CVE-2026-1043

medium

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/80b03e81-6660-483a-9150-e6075b7bffbd?source=cve

https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.php#L68

https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.php#L153

https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.php#L149

https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/tags/2.4/postmarkapp.php#L149

Details

Source: Mitre, NVD

Published: 2026-02-19

Updated: 2026-02-19

Risk Information

CVSS v2

Base Score: 3.2

Vector: CVSS2#AV:N/AC:H/Au:M/C:P/I:P/A:N

Severity: Low

CVSS v3

Base Score: 4.4

Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.0003