What is CVE-2026-6433?

CVE-2026-6433 is a high-severity vulnerability in Custom Css-js-php, classified under CWE-94 IMPROPER CONTROL OF GENERATION OF CODE ('CODE INJECTION'). CVSS score: 7.3/10. Published 2026-05-11.

How severe is CVE-2026-6433?

High severity. CVSS v3 base score is 7.3 out of 10.

Is CVE-2026-6433 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Custom Css-js-php

CVE-2026-6433

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.

EPSS: 0.010 (76.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Unknown Custom Css-js-php — versions 2.0.7

Public proof-of-concept exploits

murrez/CVE-2026-6433

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-6433?: CVE-2026-6433 is a high-severity vulnerability in Custom Css-js-php, classified under CWE-94 IMPROPER CONTROL OF GENERATION OF CODE ('CODE INJECTION'). CVSS score: 7.3/10. Published 2026-05-11.
How severe is CVE-2026-6433?: High severity. CVSS v3 base score is 7.3 out of 10.
Is CVE-2026-6433 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.