CVE-2026-47266

HIGH

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

Title source: cna
STIX 2.1

Description

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.

References (3)

Core 3
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/verbb/formie/releases/tag/2.2.21
X_Refsource_Misc x_refsource_misc
https://github.com/verbb/formie/releases/tag/3.1.26

Scores

CVSS v4 8.7
EPSS 0.0031
EPSS Percentile 22.6%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (4)
verbb/formie 0 - 2.2.21Packagist
verbb/formie 3.0.0 - 3.1.26Packagist
verbb/formie < 2.2.21
verbb/formie >= 3.0.0-beta.1, < 3.1.26
Published May 29, 2026
Tracked Since May 30, 2026