PT-2026-20228 · WordPress · Filestack Plugin

Published 2026-02-18 · Updated 2026-02-18 · CVE-2025-13959

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 Filestack plugin for WordPress versions prior to 2.0.9

Description The Filestack plugin for WordPress is susceptible to Stored Cross-Site Scripting through the 'filepicker' shortcode. Insufficient input sanitization and output escaping on user-supplied attributes allow authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These scripts will execute when a user accesses the affected page.

Recommendations Update the Filestack plugin to version 2.0.9 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-13959

Affected Products

Filestack Plugin

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2025-13959 · Security Note
• https://twitter.com/CVEnew/status/2023995927103443299 · Twitter Post
• https://plugins.trac.wordpress.org/browser/filepicker-media-uploader/trunk/lib/shortcodes.php#L20 · Note
• https://t.me/cveNotify/152271 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/2777794d-2c0a-4843-bed8-78e607d4e796?source=cve · Note
• https://plugins.trac.wordpress.org/browser/filepicker-media-uploader/tags/2.0.8/lib/shortcodes.php#L20 · Note
• https://twitter.com/VulmonFeeds/status/2024092497123688812 · Twitter Post
• https://twitter.com/CVEarity/status/2024028737839526161 · Twitter Post