CVE-2026-47266CWE-639

Formie: Unauthenticated front-end submission editing can overwrite existing submissions

High · published May 29, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
41.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00496 · 41.6th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-05-29T19:03Z
EPSS history
Timeline
  • 29 MAY 19:03Z
    Formie: Unauthenticated front-end submission editing can overwrite existing submissions
    cvelistv5