CVE-2026-76086

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.

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.

Impact

The control panel action formie/integrations/form-settings (IntegrationsController::actionFormSettings) was reachable by any authenticated user without the appropriate form integration permissions. The action applied request-supplied settings to a fully configured integration via setAttributes($settings, false), allowing an attacker to overwrite outbound host properties (e.g. apiUrl) while the server sent stored API keys or OAuth tokens to the attacker-controlled host. The remote response was returned in the JSON body (non-blind SSRF).

This is an incomplete remediation of GHSA-cvpc-hccg-wmw4. The form-settings action was excluded from the permission gate added in 3.1.28.

Any site where a low-privileged user can authenticate (including front-end members on sites with public registration) could exfiltrate CRM/email-marketing/webhook integration credentials and probe internal network endpoints.

Patches

Fixed in 3.1.31 (Craft 5) and 2.2.23 (Craft 4).

The action now requires a CP request, a valid formId, and form integration permissions (formie-showFormIntegrations / per-form variant on Craft 5; formie-manageFormIntegrations / per-form variant on Craft 4). Request settings are filtered to an allowlist; URL, host, and credential properties cannot be overridden from user input.

Workarounds

Restrict front-end user registration and limit CP access until upgraded. No configuration-only workaround fully mitigates the issue.

• Reported by Jorge González ([email protected])

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.

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.

Impact

The control panel action formie/integrations/form-settings (IntegrationsController::actionFormSettings) was reachable by any authenticated user without the appropriate form integration permissions. The action applied request-supplied settings to a fully configured integration via setAttributes($settings, false), allowing an attacker to overwrite outbound host properties (e.g. apiUrl) while the server sent stored API keys or OAuth tokens to the attacker-controlled host. The remote response was returned in the JSON body (non-blind SSRF).

This is an incomplete remediation of GHSA-cvpc-hccg-wmw4. The form-settings action was excluded from the permission gate added in 3.1.28.

Any site where a low-privileged user can authenticate (including front-end members on sites with public registration) could exfiltrate CRM/email-marketing/webhook integration credentials and probe internal network endpoints.

Patches

Fixed in 3.1.31 (Craft 5) and 2.2.23 (Craft 4).

The action now requires a CP request, a valid formId, and form integration permissions (formie-showFormIntegrations / per-form variant on Craft 5; formie-manageFormIntegrations / per-form variant on Craft 4). Request settings are filtered to an allowlist; URL, host, and credential properties cannot be overridden from user input.

Workarounds

Restrict front-end user registration and limit CP access until upgraded. No configuration-only workaround fully mitigates the issue.

• Reported by Jorge González ([email protected])