PT-2026-33601 · WordPress · Categories Images

Athiwat Tiprasaharn + 1 · Published 2026-04-18 · Updated 2026-04-19 · CVE-2026-2505

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Categories Images plugin for WordPress versions prior to 3.3.2

Description The plugin is subject to Stored Cross-Site Scripting via the 'z taxonomy image' shortcode. The issue occurs because the shortcode rendering path passes attacker-controlled class input into a fallback image builder that concatenates HTML attributes without proper escaping. This allows authenticated attackers with Contributor-level access or higher to inject arbitrary web scripts that execute when users interact with the injected frontend page through the class shortcode attribute.

Recommendations Update the plugin to a version newer than 3.3.1. As a temporary workaround, restrict the use of the class attribute within the 'z taxonomy image' shortcode.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-2505

Affected Products

Categories Images

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-2505 · Security Note
• https://plugins.trac.wordpress.org/changeset/3499275/categories-images · Note
• https://twitter.com/CVEnew/status/2045467311553888703 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/34fb64d5-e152-4950-9ef4-6d53a97a56fb?source=cve · Note
• https://twitter.com/vuldb/status/2045655926385107060 · Twitter Post