{"action":"Upgrade october/system to 3.7.17 or later.","affected":[{"fixed":"3.7.17","introduced":"0"},{"fixed":"4.2.23","introduced":"4.0.0"}],"component":"october/system","cve_ids":["CVE-2026-46696"],"ecosystem":"Packagist","epss":0.00273,"exploited":false,"fixed_versions":["3.7.17","4.2.23"],"ghsa_id":"GHSA-xv9m-fm3w-8w5x","id":"tcs_01M5KFBBQMCJE2G16DC1Y9X2QT","modified_at":"2026-09-14T16:15:09.420479242Z","published_at":"2026-09-14T16:02:35Z","references":["https://osv.dev/vulnerability/GHSA-xv9m-fm3w-8w5x","https://github.com/octobercms/october/security/advisories/GHSA-xv9m-fm3w-8w5x","https://github.com/octobercms/october"],"severity":{"label":"low","score":3.3},"sources":[{"source":"osv","source_id":"GHSA-xv9m-fm3w-8w5x","url":"https://osv.dev/vulnerability/GHSA-xv9m-fm3w-8w5x"}],"summary":"October CMS: Safe Mode Sandbox Bypass via Session Store and Forwarded Builder Calls"}