CVE-2026-76086 verbb CVE debrief

Who should care

Administrators of Craft CMS installations using the Formie plugin, especially those with low-privileged user authentication enabled, should prioritize patch deployment and monitor integration settings for suspicious changes. They should also review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2026-76086 is a high-severity vulnerability in the Formie plugin for Craft CMS, allowing low-privileged users to modify integration settings, potentially leading to server-side request forgery. Defenders should prioritize patch deployment and monitor integration settings for suspicious changes.

• Potential for server-side request forgery
• Exposure of integration credentials
• Internal network response disclosure
• Verification of patch deployment required

Technical summary

The Formie plugin for Craft CMS has a permission bypass vulnerability in the IntegrationsController::actionFormSettings action. This allows low-privileged users to modify integration settings, potentially leading to server-side request forgery. The vulnerability is fixed in versions 2.2.23 and 3.1.31. Sites that permit low-privileged or front-end user authentication can therefore expose integration credentials and internal network responses. Administrators should prioritize patch deployment and monitor integration settings for suspicious changes.

Defensive priority

High priority for systems using Formie plugin versions before 2.2.23 or 3.1.31

Recommended defensive actions

• Upgrade Formie plugin to version 2.2.23 or 3.1.31
• Restrict access to IntegrationsController::actionFormSettings action
• Monitor integration settings for suspicious changes
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

CVE Program and NVD records indicate a high-severity vulnerability in Formie plugin versions before 2.2.23 or 3.1.31. Limited details on exploitation, but potential for server-side request forgery exists. Defenders should verify patch deployment and monitor integration settings. The residual flaw remained because the permission gate added in version 3.1.28 excluded the form-settings action.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.