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-2026-1043 is a medium severity with CVSS 4.4 Stored Cross-Site Scripting issue affecting the Plugin PostmarkApp Email Integrator. It affects Versions up to 2.4 and is listed without a confirmed patched release.
CVE-2026-1043 is tracked for the Plugin PostmarkApp Email Integrator as medium severity with CVSS 4.4. The affected range is Versions up to 2.4. No fixed release is listed in this feed entry, so operators should monitor the vendor and reference links before accepting the risk.
| Software Type | Plugin |
|---|---|
| Software Slug |
postmarkapp-email-integrator
View on wordpress.org
|
| CVE | CVE-2026-1043 |
| Patched Versions |
No patched versions published.
|
| Affected Versions |
Versions up to 2.4
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
PostmarkApp Email Integrator <= 2.4 - Missing Authorization
PostmarkApp Email Integrator <= 2.4 - Cross-Site Request Forgery to Stored Cross-Site Scripting
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