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.
SeverityMedium
CVSS4.4
Exploit probability—
ProductPostmarkApp Email Integrator
PublishedFeb 19, 2026
First seenFeb 19, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gagan0123 PostmarkApp Email Integrator | v ≤ 2.4 | — |
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