CVE-2024-4023

HighCVSS 8.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 8.1/10CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published: Mar 20, 2025
Last modified: Jun 17, 2026
NVD status: Analyzed

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