PT-2026-4597 · WordPress · Postalicious

Bhumividh Treloges · Published 2026-01-24 · Updated 2026-01-24 · CVE-2026-1266

Positive Technologies (AI Summary)

CVSS v3.1

4.4

Medium

Base vector

AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Postalicious versions prior to 3.0.2

Description The Postalicious plugin for WordPress is susceptible to Stored Cross-Site Scripting through admin settings. Insufficient input sanitization and output escaping allow authenticated attackers with administrator-level permissions or higher to inject arbitrary web scripts into pages. These scripts will execute when a user accesses the injected page. This issue only impacts multi-site installations and those where unfiltered html has been disabled.

Recommendations Update Postalicious to version 3.0.2 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-1266

Affected Products

Postalicious

References · 13

• https://nvd.nist.gov/vuln/detail/CVE-2026-1266 · Security Note
• https://plugins.trac.wordpress.org/browser/postalicious/trunk/wp-postalicious.php#L548 · Note
• https://twitter.com/VulmonFeeds/status/2015055105079275832 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/512c9a2f-b023-4e28-8dd8-35795e68a8b3?source=cve · Note
• https://plugins.trac.wordpress.org/browser/postalicious/tags/3.0.1/wp-postalicious.php#L541 · Note
• https://plugins.trac.wordpress.org/browser/postalicious/trunk/wp-postalicious.php#L541 · Note
• https://plugins.trac.wordpress.org/browser/postalicious/trunk/wp-postalicious.php#L533 · Note
• https://plugins.trac.wordpress.org/browser/postalicious/tags/3.0.1/wp-postalicious.php#L533 · Note
• https://twitter.com/CVEnew/status/2014995766595776668 · Twitter Post
• https://plugins.trac.wordpress.org/browser/postalicious/tags/3.0.1/wp-postalicious.php#L316 · Note
• https://plugins.trac.wordpress.org/browser/postalicious/tags/3.0.1/wp-postalicious.php#L548 · Note
• https://t.me/CVEtracker/42933 · Telegram Post
• https://plugins.trac.wordpress.org/browser/postalicious/trunk/wp-postalicious.php#L316 · Note