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Vulnerability record · CVE-2024-9699 · published 20 March 2025

CVE-2024-9699: Flatpress cross-site scripting vulnerability

Flatpress · Flatpress

A vulnerability in the file upload functionality of the FlatPress CMS admin panel (version latest) allows an attacker to upload a file with a JavaScript payload disguised as a filename. This can lead to a Cross-Site Scripting (XSS) attack if the uploaded file is accessed by other users. The issue is fixed in version 1.4.dev.

5.4 CVSS 3.1 Medium EPSS 0.35% · top 73.8% CWE-79 · Cross-site scripting
5.4CVSS 3.1 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the file upload functionality of the FlatPress CMS admin panel (version latest) allows an attacker to upload a file with a JavaScript payload disguised as a filename. This can lead to a Cross-Site Scripting (XSS) attack if the uploaded file is accessed by other users. The issue is fixed in version 1.4.dev.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/flatpressblog/flatpress/commit/f364391085334a7eae02aa2320edd6de7466ec85 Patch
https://huntr.com/bounties/a993a05f-be50-4983-a44a-3bbff1ec00db Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-0947Flatpress path traversal vulnerabilityPath Traversal in GitHub repository flatpressblog/flatpress prior to 1.3.EPSS 3.6%9.8CVE-2022-4748Flatpress path traversal vulnerabilityA vulnerability was found in FlatPress. It has been classified as critical. This affects the function doItemActions of the file fp-plugins/mediamanag…EPSS 0.87%9.8CVE-2022-4606Flatpress php remote file inclusion vulnerabilityPHP Remote File Inclusion in GitHub repository flatpressblog/flatpress prior to 1.3.EPSS 35%8.8CVE-2020-22761Flatpress cross-site request forgery vulnerabilityCross Site Request Forgery (CSRF) vulnerability in FlatPress 1.1 via the DeleteFile function in flat/admin.php.EPSS 0.76%8.1CVE-2024-4023Flatpress cross-site scripting vulnerabilityA stored cross-site scripting (XSS) vulnerability exists in flatpressblog/flatpress version 1.3. When a user uploads a file with a `.xsig` extension …EPSS 0.79%8.1CVE-2024-41290Flatpress vulnerabilityFlatPress CMS v1.3.1 1.3 was discovered to use insecure methods to store authentication data via the cookie's component.EPSS 0.43%8.1CVE-2023-1105Flatpress vulnerabilityExternal Control of File Name or Path in GitHub repository flatpressblog/flatpress prior to 1.3.EPSS 0.71%8.0CVE-2024-9847Flatpress cross-site request forgery vulnerabilityFlatPress CMS version latest is vulnerable to Cross-Site Request Forgery (CSRF) attacks that allow an attacker to enable or disable plugins on behalf…EPSS 0.34%

Source: NIST National Vulnerability Database (record CVE-2024-9699), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.