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CVE-2026-47266— Formie: Unauthenticated front-end submission editing can overwrite existing submissions

Quick assessment

Affected
verbb formie
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Formie for Craft CMS是Verbb开源的一个Craft CMS的表单插件。 Formie for Craft CMS 2.2.21之前版本和3.1.26之前版本存在安全漏洞，该漏洞源于未经验证的用户可通过提交已知或猜测的提交ID修改现有提交。

AI Predicted 8.8 Difficulty: Easy EPSS 0.31% · P24

Affected Version Matrix 2

VendorProduct Version RangeStatus
verbb formie < 2.2.21 affected
>= 3.0.0-beta.1, < 3.1.26 affected
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I. Basic Information for CVE-2026-47266

Vulnerability Information
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Vulnerability Title
Formie: Unauthenticated front-end submission editing can overwrite existing submissions
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Formie for Craft CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Formie for Craft CMS是Verbb开源的一个Craft CMS的表单插件。 Formie for Craft CMS 2.2.21之前版本和3.1.26之前版本存在安全漏洞，该漏洞源于未经验证的用户可通过提交已知或猜测的提交ID修改现有提交。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
verbb formie < 2.2.21 -

II. Public POCs for CVE-2026-47266

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III. Intelligence Information for CVE-2026-47266

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Vendor Advisories for CVE-2026-47266 (1)

Vendor Pages for CVE-2026-47266 (2)

IV. Related Vulnerabilities

Same product: formie
Same vendor: verbb
Same weakness: CWE-639

V. Comments for CVE-2026-47266

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