formie's unauthenticated front-end submission editing can overwrite existing submissions
Impact
Unauthenticated users could modify existing submissions by posting a known or guessed submission ID to formie/submissions/save-submission.
Patches
Workarounds
Block unauthenticated access to actions/formie/submissions/save-submission, or disable/customize front-end submission editing until patched.
Credit
formie extends many thanks to:
- Florian (Cyber Security Engineer, arcade solutions ag)
- Contact: security@arcade.ch
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | verbb/formie | >= 3.0.0, < 3.1.26, < 2.2.21 | 3.1.26, 2.2.21 |
References
- CVSS 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/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- Weakness (CWE)
CWE-639- Platform
- Composer
- Package
verbb/formie- Disclosed
- 29.05.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-pgxq-p76c-x9cg - CC BY 4.0
Vulnerability history: verbb/formie
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 05.2024 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 4
- Medium 4
Disclosures per year
- 2024: 1
- 2025: 2
- 2026: 7
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