{"id":"CVE-2026-112777","revision":"87183084ad1a4fa49065913e05f2b72f","records":[{"revision":"87183084ad1a4fa49065913e05f2b72f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-112777","aliases":[],"title":"Craft CMS before 4.18.8 and 5.11.0 Twig create() Blocklist Bypass Leading to RCE","description":"Craft CMS 4.x before 4.18.8 and 5.x before 5.11.0 contains a blocklist bypass in the Twig create() function because its class-name checks are case-sensitive while PHP class resolution is not. Attackers with template-execution rights, such as Control Panel administrators, can instantiate SplFileObject via a lowercase class name to read .env secrets or write a PHP file into the webroot for remote code execution.","state":0,"publishedAt":"2026-10-19T19:10:54.567+00:00","modifiedAt":"2026-10-20T16:09:54.518+00:00","affected":[{"ecosystem":"Vendor product","name":"cms","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"craftcms\",\n                    \"product\": \"cms\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"4.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"4.18.8\"\n                        },\n                        {\n                            \"version\": \"4.18.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"cms","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"craftcms\",\n                    \"product\": \"cms\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"5.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"5.11.0\"\n                        },\n                        {\n                            \"version\": \"5.11.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":7.2,"severity":"HIGH"}],"references":["https://github.com/craftcms/cms/security/advisories/GHSA-w643-x88w-6wcm","https://www.vulncheck.com/advisories/craft-cms-before-4.18.8-and-5.11.0-twig-create-blocklist-bypass-leading-to-rce"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112777","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-112777","identifiers":["CVE-2026-112777"]},"retained":false,"historicalAffected":[]}],"coverage":[]}