PT-2026-42394 · WordPress · Avada Builder

Craig Smith · Published 2026-05-21 · Updated 2026-05-21 · CVE-2026-1543

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Avada (Fusion) Builder plugin for WordPress versions prior to 3.15.3

Description The plugin is subject to Stored Cross-Site Scripting (XSS), a flaw where malicious scripts are permanently stored on the target server. This occurs due to insufficient input sanitization and output escaping within multiple shortcodes. Authenticated attackers with Subscriber-level access or higher can inject arbitrary web scripts into pages. These scripts execute when a user, typically an administrator, views a page that displays dynamic user data, such as biographical information retrieved via the Dynamic Data feature.

Recommendations Update the plugin to a version later than 3.15.2.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-1543

Affected Products

Avada Builder

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-1543 · Security Note
• https://twitter.com/CVEnew/status/2057407792156205429 · Twitter Post
• https://t.me/cveNotify/164331 · Telegram Post
• https://twitter.com/infoflowcloud/status/2057408812982620423 · Twitter Post
• https://themeforest.net/item/avada-responsive-multipurpose-theme/2833226 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/72a6b040-ed02-4561-82f2-4adb820bdf7d?source=cve · Note
• https://t.me/CVEtracker/54456 · Telegram Post
• https://avada.com/documentation/avada-changelog · Note