CVE-2024-4023CWE-79

Stored XSS in flatpressblog/flatpress

High · published March 20, 2025

CVSS v3.0
8.1
EPSS
1%
Percentile
56.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
8.1 · HIGH
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00808 · 56.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-03-20T10:09Z
EPSS history
Timeline
  • 20 MAR 10:09Z
    Stored XSS in flatpressblog/flatpress
    cvelistv5