High severity · published Oct 12, 2026
CVE-2026-109305
Craft CMS 5.10.2 before 5.10.14 Twig Sandbox Bypass RCE via has some/has every
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
Craft CMS from 5.10.2 before 5.10.14 contains a Twig sandbox bypass that allows non-admin users to invoke PHP callables through the "has some" and "has every" operators. Users with the System Messages permission can supply two-argument callables such as passthru or system in sandboxed templates to execute code as the web user.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
cms · craftcms
5.10.2 before 5.10.14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109305
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109305
vendor-advisory
https://github.com/craftcms/cms/security/advisories/GHSA-vfcw-xv8p-8rj2
third-party-advisory
https://www.vulncheck.com/advisories/craft-cms-5.10.2-before-5.10.14-twig-sandbox-bypass-rce-via-has-some-has-every
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