CVE-2026-110880 Kit CVE debrief

Who should care

Defenders responsible for Kit (formerly ConvertKit) convertkit installations, particularly those using versions prior to 3.4.7, should assess exposure and prioritize verification and remediation.

Why it matters

Defenders should prioritize verifying and updating Kit (formerly ConvertKit) convertkit versions to 3.4.7 or later, and review access control configurations to prevent potential exploitation of incorrectly configured security levels.

• Potential unauthorized access to sensitive data
• Possible exploitation of incorrectly configured access control security levels
• Verification of access control configurations required
• Remediation priority for Kit (formerly ConvertKit) convertkit versions prior to 3.4.7

Technical summary

The CVE record describes a Missing Authorization vulnerability in Kit Kit (formerly ConvertKit) convertkit, which allows Exploiting Incorrectly Configured Access Control Security Levels. The issue affects Kit (formerly ConvertKit): from n/a through 3.4.6.

Defensive priority

Defenders should prioritize verifying and updating Kit (formerly ConvertKit) convertkit versions to 3.4.7 or later, and review access control configurations.

Recommended defensive actions

• Verify Kit (formerly ConvertKit) convertkit version and update to 3.4.7 or later if necessary
• Review access control configurations for convertkit
• Monitor system logs for potential exploitation attempts

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further investigation is required to determine the full scope of affected systems and potential impact.

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.