A stored Cross-Site Scripting (XSS) vulnerability exists in the administration panel of Flatpress CMS before 1.4 via the gallery captions component. An attacker with admin privileges can inject a malicious JavaScript payload into the system, which is then stored persistently.
https://harish0x.github.io/blog/CVE-2025-44108
https://github.com/flatpressblog/flatpress/releases/tag/1.4.rc2
https://github.com/flatpressblog/flatpress/releases/tag/1.3.1
https://github.com/flatpressblog/flatpress/commit/24a6feacf1747ec19725b52c097715c8ab9c4559