Vulnerability · Published Feb 19, 2026 · Assigned by Wordfence

CVE-2026-1043PostmarkApp Email Integrator <= 2.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via Plugin Settings

Medium 4.4

In plain English

A medium-severity cross-site scripting in PostmarkApp Email Integrator from gagan0123. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)4.4Medium

Exploit odds (30 days)0.3%top 80.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
gagan0123	PostmarkApp Email Integrator	0 – through 2.4

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References