PT-2021-16283 · WordPress · Flat Preloader

Apple502J · Published 2021-11-01 · Updated 2021-11-02 · CVE-2021-24789

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Flat Preloader WordPress plugin versions prior to 1.5.5

Description: The issue allows high privilege users to perform Cross-Site Scripting attacks due to the plugin not escaping some of its settings when outputting them in attributes in the frontend, even when the unfiltered html is disallowed.

Recommendations: For versions prior to 1.5.5, update to version 1.5.5 or later to resolve the issue. As a temporary workaround, consider restricting access to the plugin's settings to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24789

Affected Products

Flat Preloader

References · 5

• 🔥 https://wpscan.com/vulnerability/e8550ccd-3898-4e27-aca9-ade89823ff4d · Exploit
• https://osv.dev/vulnerability/CVE-2021-24789 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-24789 · Security Note
• https://t.me/cibsecurity/31518 · Telegram Post
• https://t.me/cvenotify/22760 · Telegram Post