templates/forms/thanks.html in Formspree before 2018-01-23 allows XSS related to the _next parameter.
https://github.com/formspree/formspree/commit/5f18eeaaa459bee9a58f70cdf7c46adb1ef34ea7
Source: Mitre, NVD
Published: 2018-01-27
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00223