FTAPI 4.0 through 4.10 allows XSS via an SVG document to the Background Image upload feature in the Submit Box Template Editor.
https://www.ftapi.com/release-notes/
https://github.com/rauschecker/CVEs/tree/main/CVE-2021-25278
Source: Mitre, NVD
Published: 2021-03-19
Updated: 2026-06-17
Base Score: 3.5
Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N
Severity: Low
Base Score: 4.8
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Severity: Medium
EPSS: 0.00465