Vulnerability · Published Mar 20, 2025 · Assigned by @huntr_ai
CVE-2024-4023Stored XSS in flatpressblog/flatpress
High 8.1
In plain English
A high-severity cross-site scripting in flatpressblog/flatpress from flatpressblog. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| flatpressblog | flatpressblog/flatpress | unspecified – before 1.3 |
Weakness: CWE-79 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H