Description
Form.io is a combined Form and API platform for Serverless applications. Versions 3.5.6 and below and 4.0.0-rc.1 through 4.4.2 contain a flaw in path handling which could allow an attacker to access protected API endpoints by sending a crafted request path. An unauthenticated or unauthorized request could retrieve data from endpoints that should be protected. This issue is fixed in versions 3.5.7 and 4.4.3.
Scores
CVSS v4
8.7
EPSS
0.0008
EPSS Percentile
22.7%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-178
CWE-200
Status
published
Products (3)
formio/formio
< 3.5.7
formio/formio
>= 4.0.0-rc.1, < 4.4.3
npm/formio
0 - 3.5.7npm
Published
Dec 11, 2025
Tracked Since
Feb 18, 2026