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Vulnerability record · CVE-2026-76086 · published 23 September 2026

CVE-2026-76086: Missing authorization vulnerability

Formie is a Craft CMS plugin for creating forms. Prior to 2.2.23 and 3.1.31, Formie's formie/integrations/form-settings control panel action in IntegrationsController::actionFormSettings is reachable without the required form integration permissions and passes request-supplied settings to a configured integration. An authenticated attacker can replace outbound host properties such as apiUrl while the server uses stored API keys or OAuth tokens, causing non-blind server-side requests to an attacker-controlled or internal host and returning the remote response. This residual flaw remained because the permission gate added in version 3.1.28 excluded the form-settings action. Sites that permit low-privileged or front-end user authentication can therefore expose integration credentials and internal network responses. This issue is fixed in versions 2.2.23 and 3.1.31.

8.5 CVSS 3.1 High EPSS 0.29% · top 80.5% CWE-862 · Missing authorizationCWE-915 · Mass assignment Received
8.5CVSS 3.1 base score
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
23 Sep 2026Last modified by NVD

Description

Formie is a Craft CMS plugin for creating forms. Prior to 2.2.23 and 3.1.31, Formie's formie/integrations/form-settings control panel action in IntegrationsController::actionFormSettings is reachable without the required form integration permissions and passes request-supplied settings to a configured integration. An authenticated attacker can replace outbound host properties such as apiUrl while the server uses stored API keys or OAuth tokens, causing non-blind server-side requests to an attacker-controlled or internal host and returning the remote response. This residual flaw remained because the permission gate added in version 3.1.28 excluded the form-settings action. Sites that permit low-privileged or front-end user authentication can therefore expose integration credentials and internal network responses. This issue is fixed in versions 2.2.23 and 3.1.31.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

References

LinkTags
https://github.com/advisories/GHSA-cvpc-hccg-wmw4
https://github.com/verbb/formie/commit/6735fe4ae8f6a2a76930716ad7876b236f7c530d
https://github.com/verbb/formie/commit/dde7799dfa7e4d0a11e28754ad8544dba62d5def
https://github.com/verbb/formie/releases/tag/2.2.23
https://github.com/verbb/formie/releases/tag/3.1.31
https://github.com/verbb/formie/security/advisories/GHSA-v3f3-cmj4-cvj9

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Source: NIST National Vulnerability Database (record CVE-2026-76086), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.