What is CVE-2024-9204?

CVE-2024-9204 is a medium-severity vulnerability in Nerdpress Smart Custom 404 Error Page, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-10-04.

How severe is CVE-2024-9204?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2024-9204 known to be exploited?

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

XSS in Nerdpress Smart Custom 404 Error Page

CVE-2024-9204

The Smart Custom 404 Error Page plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via $_SERVER['REQUEST_URI'] in all versions up to, and including, 11.4.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (35.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Nerdpress Smart_custom_404_error_page
Nerdpressteam Smart Custom 404 Error Page — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Product)
security@wordfence.com (Product)
security@wordfence.com (Patch)

Frequently asked questions

What is CVE-2024-9204?: CVE-2024-9204 is a medium-severity vulnerability in Nerdpress Smart Custom 404 Error Page, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-10-04.
How severe is CVE-2024-9204?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2024-9204 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.