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CVE-2026-1043

MEDIUM

4.4

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.

CVE Details

CVSS v3.1 Score4.4

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredHIGH

User InteractionNONE

Published2/19/2026

Last Modified2/19/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-79

References

https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/tags/2.4/postmarkapp.php#L149(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.php#L149(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.php#L153(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/postmarkapp-email-integrator/trunk/postmarkapp.php#L68(security@wordfence.com)

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

IOC Correlations

No correlations recorded

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