How severe is CVE-2024-39646?

CVE-2024-39646 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2024-39646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-39646?

CVE-2024-39646 affects Kunalnagar Custom 404 Pro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-39646?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-39646 have an EU (EUVD) identifier?

Yes. CVE-2024-39646 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38151.

When was CVE-2024-39646 published?

CVE-2024-39646 was published on 2024-08-01 and last updated on 2026-06-17.

CVE-2024-39646

CVE-2024-39646 is a high-severity vulnerability in Kunalnagar Custom 404 Pro with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38151
Weakness: CWE-79
Affected product: Kunalnagar Custom 404 Pro
Published: 2024-08-01
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Custom 404 Pro custom-404-pro.This issue affects Custom 404 Pro: from n/a through <= 3.11.1.

Frequently asked questions

What is CVE-2024-39646?: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Custom 404 Pro custom-404-pro.This issue affects Custom 404 Pro: from n/a through <= 3.11.1.
How severe is CVE-2024-39646?: CVE-2024-39646 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2024-39646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-39646?: CVE-2024-39646 affects Kunalnagar Custom 404 Pro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-39646?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-39646 have an EU (EUVD) identifier?: Yes. CVE-2024-39646 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38151.
When was CVE-2024-39646 published?: CVE-2024-39646 was published on 2024-08-01 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/custom-404-pro/vulnerability/wordpress-custom-404-pro-plugin-3-11-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

Affected products (1)

cpe:2.3:a:kunalnagar:custom_404_pro:*:*:*:*:*:wordpress:*:*

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