PT-2021-11952 · WordPress · Advanced Custom Fields Pro

Janlele91 · Published 2021-01-06 · Updated 2021-01-09 · CVE-2020-36172

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Advanced Custom Fields plugin version 5.8.11 and earlier

Description: The issue is related to the mishandling of string escaping in Select2 dropdowns, potentially leading to cross-site scripting (XSS). XSS is a type of attack where an attacker injects malicious code into a website, which is then executed by the user's browser. This can lead to unauthorized access to sensitive data or taking control of the user's session.

Recommendations: For versions prior to 5.8.12, update to version 5.8.12 or later to resolve the issue. As a temporary workaround, consider disabling the use of Select2 dropdowns in the Advanced Custom Fields plugin until a patch is applied. Restrict access to areas of the website that utilize the Advanced Custom Fields plugin to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-36172

Affected Products

Advanced Custom Fields Pro

References · 6

• https://osv.dev/vulnerability/CVE-2020-36172 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-36172 · Security Note
• https://t.me/cvenotify/8369 · Telegram Post
• https://t.me/cvenotify/8227 · Telegram Post
• https://t.me/cibsecurity/21668 · Telegram Post
• https://wordpress.org/plugins/advanced-custom-fields/#developers · Note