Medium severity · published Oct 12, 2026
CVE-2026-109306
Craft CMS 5.0.0 before 5.10.14 Missing Authorization via app/switch-to-licensed-edition
5.9
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
cms · craftcms
5.0.0 before 5.10.14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109306
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109306
vendor-advisory
https://github.com/craftcms/cms/security/advisories/GHSA-4wfw-q5w3-jh42
third-party-advisory
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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