What’s Vulnerable › Vulnerabilities

CVE-2026-1266: Postalicious <= 3.0.1 - Authenticated (Administrator+) Stored Cross-Site Scripting via Plugin Settings

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-24 · updated 2026-06-17
• Weakness: CWE-79

Description

The Postalicious plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.0.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

• neop Postalicious: through 3.0.1

References

• https://plugins.trac.wordpress.org/browser/postalicious/tags/3.0.1/wp-postalicious.php#L316
• https://plugins.trac.wordpress.org/browser/postalicious/tags/3.0.1/wp-postalicious.php#L533
• https://plugins.trac.wordpress.org/browser/postalicious/tags/3.0.1/wp-postalicious.php#L541
• https://plugins.trac.wordpress.org/browser/postalicious/tags/3.0.1/wp-postalicious.php#L548
• https://plugins.trac.wordpress.org/browser/postalicious/trunk/wp-postalicious.php#L316
• https://plugins.trac.wordpress.org/browser/postalicious/trunk/wp-postalicious.php#L533
• https://plugins.trac.wordpress.org/browser/postalicious/trunk/wp-postalicious.php#L541
• https://plugins.trac.wordpress.org/browser/postalicious/trunk/wp-postalicious.php#L548
• https://www.wordfence.com/threat-intel/vulnerabilities/id/512c9a2f-b023-4e28-8dd8-35795e68a8b3?source=cve

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