CVE-2026-1043

MediumCVSS 4.4/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 4.4/10CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

VendorProductVersions
gagan0123PostmarkApp Email Integrator<= 2.4

References

Timeline

Published
Feb 19, 2026
Last modified
Jun 17, 2026
NVD status
Deferred

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CVE-2026-1043: Medium severity, CVSS 4.4 | Vulnix