CVE-2025-67718: Formio improperly authorized permission elevation through specially crafted request path

Severity: high (CVSS 8.7 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-11 · updated 2026-10-14
Weakness: CWE-178

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.

Affected products

formio: before 3.5.7; from 4.0.0-rc.1, < 4.4.3

References

https://github.com/formio/formio/commit/1836bdd9f55f5888ff397c257b2108c09d3de478
https://github.com/formio/formio/security/advisories/GHSA-m654-769v-qjv7

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