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CVE-2026-6433

HighPublished

Custom CSS JS PHP <= 2.0.7 - Unauthenticated SQL Injection to RCE

Published: May 11, 2026
Updated: May 11, 2026
Assigning CNA: WPScan
Evidence observed: Aug 8, 2026

Primary CVSS

7.3/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS probability estimate

1.2%

Low · next 30 days

Percentile: 66.2%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server.

Sources

CVE-2026-6433Exploit
PoC for CVE-2026-6433: WordPress FlipperCode Custom CSS, JS & PHP (≤2.0.7) — unauthenticated SQLi to RCE. Python 3 stdlib; single target or bulk multi-threaded scanning. Authorized testing & research only.

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