{"id":"CVE-2026-72782","summary":"Craft CMS 5.0.0-RC1 before 5.10.6 Environment Variable Leak","details":"Craft CMS versions \u003e= 5.0.0-RC1 before 5.10.6 and \u003e= 4.0.0-RC1 before 4.18.2 interpolate environment variables and secrets (via ${ENV_VAR} strings in the elementId parameter) into Twig templates before rendering, even when the Twig sandbox is enabled. An authenticated attacker with control panel access can render a malicious sandboxed Twig template and, using a blind error-based technique across many requests, incrementally leak arbitrary environment variables and secrets. These can be abused to forge sessions (via CRAFT_SECURITY_KEY), escalate privileges, and steal database, SMTP, API, or blob storage credentials. Fixed in 5.10.6 and 4.18.2.","aliases":["GHSA-596p-6jv8-775v"],"modified":"2026-08-13T03:51:57.984716829Z","published":"2026-08-11T12:17:17.101Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-668"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72782.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72782.json"},{"type":"ADVISORY","url":"https://github.com/craftcms/cms/security/advisories/GHSA-596p-6jv8-775v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72782"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/craft-cms-rc1-before-environment-variable-leak"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/craftcms/cms","events":[{"introduced":"04755d93f86d07cc183db47db8a0eee106892e30"},{"fixed":"5c055703a13ba3a52bf013d7ba6c0223d6f62ef8"},{"introduced":"daac7c1da2f701f2e9ddee1da1457ce61660b581"},{"fixed":"c7ea105e1d2cf043e76e7847d84e5732071a26b4"}],"database_specific":{"extracted_events":[{"introduced":"5.0.0-RC1"},{"fixed":"5.10.6"},{"introduced":"4.0.0-RC1"},{"fixed":"4.18.2"}],"source":"AFFECTED_FIELD"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72782.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}