PT-2025-8672 · WordPress · Custom Block Builder

Hassan Khan Yusufzai + 1 · Published 2025-02-26 · Updated 2026-02-11 · CVE-2024-12878

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions The Custom Block Builder WordPress plugin versions prior to 3.8.3

Description The issue is related to a Reflected Cross-Site Scripting problem. It occurs because a parameter is not properly sanitised and escaped before being outputted back in the page. This could be exploited against high-privilege users, such as administrators.

Recommendations For versions prior to 3.8.3, update to version 3.8.3 or later to resolve the issue.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-12878

Affected Products

Custom Block Builder

References · 7

• 🔥 https://wpscan.com/vulnerability/827444d1-87cb-4057-827a-d802eac82cf8 · Exploit
• https://osv.dev/vulnerability/CVE-2024-12878 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-12878 · Security Note
• https://twitter.com/pdnuclei_bot/status/2021675641658286141 · Twitter Post
• https://t.me/cvenotify/122442 · Telegram Post
• https://twitter.com/cybercronai/status/1894885625146327214 · Twitter Post
• https://twitter.com/CVEnew/status/1894867696929644846 · Twitter Post