PT-2021-16106 · WordPress · Custom Css

[e-mail] Inc · Published 2021-09-06 · Updated 2021-09-09 · CVE-2021-24591

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 Highlight WordPress plugin versions prior to 0.9.3

Description The issue allows high privilege users to perform Cross-Site Scripting attacks due to the lack of sanitization in the CustomCSS setting, even when the unfiltered html capability is disallowed.

Recommendations For versions prior to 0.9.3, update to version 0.9.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the CustomCSS setting to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24591

Affected Products

Custom Css

References · 5

• 🔥 https://wpscan.com/vulnerability/c5cbe3b4-2829-4fd2-8194-4b3a2ae0e257 · Exploit
• https://osv.dev/vulnerability/CVE-2021-24591 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-24591 · Security Note
• https://t.me/cvenotify/20687 · Telegram Post
• https://t.me/cibsecurity/28276 · Telegram Post