Formie is a Craft CMS plugin for creating forms. Prior to 2.2.21 and 3.1.26, unauthenticated users could modify existing submissions by posting a known or guessed submission ID to formie/submissions/save-submission. This vulnerability is fixed in 2.2.21 and 3.1.26.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47266.json",
"cwe_ids": [
"CWE-639"
],
"cna_assigner": "GitHub_M"
}