{"id":"CVE-2020-28246","aliases":["GHSA-52vj-mr2j-f8jh"],"url":"https://o3.security/vulnerability/CVE-2020-28246","summary":"Server-Side Template Injection in formio","details":"A Server-Side Template Injection (SSTI) was discovered in Form.io 2.0.0. This leads to Remote Code Execution during deletion of the default Email template URL. NOTE: the email templating service was removed after 2020. Additionally, the vendor disputes this issue indicating this is sandboxed and only executable by admins.","published":"2022-06-02T14:15:26.700Z","modified":"2026-07-08T19:45:30.673401Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"formio","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/formio/enterprise-release/blob/master/API-Server-Change-Log.md"},{"type":"ADVISORY","url":"https://github.com/formio/formio"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T19:45:30.673401Z"}}