PT-2021-16195 · WordPress · Flat Preloader

Apple502J · Published 2021-11-01 · Updated 2022-11-09 · CVE-2021-24685

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Flat Preloader WordPress plugin versions prior to 1.5.4

Description The issue arises from the lack of nonce checks when saving settings and the failure to sanitise and escape them, which could allow attackers to make logged-in admins change settings with a Cross-Site Scripting payload. This payload can be triggered in either the frontend or backend, depending on its nature.

Recommendations For versions prior to 1.5.4, update to version 1.5.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the settings page to minimize the risk of exploitation.

Exploit

Fix

XSS

CSRF

Weakness Enumeration

CWE-79

CWE-352

Related Identifiers

CVE-2021-24685

Affected Products

Flat Preloader

References · 6

• 🔥 https://wpscan.com/vulnerability/972ecde8-3d44-4dd9-81e3-643d8737434f · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-24685 · Security Note
• https://osv.dev/vulnerability/CVE-2021-24685 · Vendor Advisory
• https://t.me/cvenotify/22770 · Telegram Post
• https://t.me/cibsecurity/31533 · Telegram Post
• https://t.me/cvenotify/33903 · Telegram Post