Is CVE-2024-4023 actively exploited?

No active exploitation of CVE-2024-4023 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-4023 be exploited remotely?

Yes. CVE-2024-4023 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-4023?

CVE-2024-4023 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2024-4023

HIGH

CVE-2024-4023

CWE-79Published: March 20, 2025· Updated: Jun 17, 2026

8.1

CVSS v3.1

Official Description

A stored cross-site scripting (XSS) vulnerability exists in flatpressblog/flatpress version 1.3. When a user uploads a file with a `.xsig` extension and directly accesses this file, the server responds with a Content-type of application/octet-stream, leading to the file being processed as an HTML file. This allows an attacker to execute arbitrary JavaScript code, which can be used to steal user cookies, perform HTTP requests, and access content of the same origin.

NVD Source

Technical Analysis

CVE-2024-4023 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 8.1.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.