CVE-2026-1043
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.
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.4 MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.24% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
References
- https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/tags/2.4/postmarkapp.php#L149
- https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.php#L149
- 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#L68
- https://www.wordfence.com/threat-intel/vulnerabilities/id/80b03e81-6660-483a-9150-e6075b7bffbd?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.