{"id":"GHSA-p8q3-h652-65vx","aliases":["CVE-2023-44382"],"title":"October CMS safe mode bypass using Twig sandbox escape","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"CRITICAL","description":"### Impact\n\nAn authenticated backend user with the `editor.cms_pages`, `editor.cms_layouts`, or `editor.cms_partials` permissions who would normally not be permitted to provide PHP code to be executed by the CMS due to `cms.safe_mode` being enabled can write specific Twig code to escape the Twig sandbox and execute arbitrary PHP.\n\nThis is not a problem for anyone who trusts their users with those permissions to usually write and manage PHP within the CMS by not having `cms.safe_mode` enabled. Still, it would be a problem for anyone relying on `cms.safe_mode` to ensure that users with those permissions in production do not have access to write and execute arbitrary PHP.\n\n### Patches\n\nThis issue has been patched in v3.4.15.\n\n### Workarounds\n\nAs a workaround, remove the specified permissions from untrusted users.\n\n### References\n\nCredits to:\n- [Vasiliy Bodrov](https://github.com/whatev3n)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [hello@octobercms.com](mailto:hello@octobercms.com)","severity":"critical","score":9.1,"published":"2023-11-29T21:33:21.000Z","modified":"2023-12-04T15:18:39.000Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"october/system","sources":[{"name":"OSV · GHSA-p8q3-h652-65vx","url":"https://osv.dev/vulnerability/GHSA-p8q3-h652-65vx"}],"ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.4.15"}],"type":"ECOSYSTEM"}],"versions":[],"fixed":["3.4.15"]}],"sourceAffected":[],"references":["https://github.com/octobercms/october/security/advisories/GHSA-p8q3-h652-65vx","https://nvd.nist.gov/vuln/detail/CVE-2023-44382","https://github.com/octobercms/october"],"sources":[{"name":"OSV","id":"GHSA-p8q3-h652-65vx","modified":"2023-12-04T15:18:39Z","url":"https://osv.dev/vulnerability/GHSA-p8q3-h652-65vx"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","score":9.1}],"products":[],"remediation":[],"kev":{"status":"unavailable","checkedAt":"2026-10-28T21:45:31.439Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}