CVE-2026-47266

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

CVSS 8.7 HIGHEPSS 0.3%CWE-639

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

29 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

verbb · formie

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References

https://github.com/verbb/formie/releases/tag/2.2.21 https://github.com/verbb/formie/releases/tag/3.1.26 https://github.com/verbb/formie/security/advisories/GHSA-pgxq-p76c-x9cg