Kirby CMS's read access to site, user and role information is not gated by permissions — CVE-2026-42069

Summary

### TL;DR This vulnerability affects all Kirby sites that might have potential attackers in the group of authenticated Panel users. **This vulnerability is of high severity for affected sites.** Sites using Kirby are *not* affected if they intend all users of the site to be able to list and access the site model and all users and roles, including the content stored within these models. Write actions are *not*…

Product

composer: getkirby/cms

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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