CVE-2024-39646
Published: 01 August 2024
Summary
CVE-2024-39646 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Kunalnagar Custom 404 Pro. Its CVSS base score is 7.1 (High).
Operationally, ranked in the top 12.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2024-39646 is a reflected cross-site scripting vulnerability arising from improper neutralization of input during web page generation. It affects the Custom 404 Pro WordPress plugin developed by Kunal, impacting all versions through 3.11.1 and carrying a CVSS 3.1 score of 7.1.
An unauthenticated remote attacker can supply a crafted URL that, when visited by a logged-in or unauthenticated user, executes arbitrary script in the context of the affected site. Successful exploitation yields limited impacts to confidentiality, integrity, and availability while changing scope to other application components.
The issue is tracked in the Patchstack vulnerability database, which identifies the reflected XSS flaw in the plugin and points administrators to the need for an update once a fixed release is issued.
EPSS for the CVE rose from lower values to a peak of 0.0912 before receding to the current 0.0350, indicating a period of increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38151
Vulnerability details
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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.