{"id":"DRUPAL-CONTRIB-2026-286","details":"Stage File Proxy is a general solution for getting production files on a development server on demand. **It is not intended for usage on production sites.**\n\nThe module doesn't sufficiently check file URL for malicious content when attempting to do fallback retrieval leading to a cross-site scripting vulnerability.\n\nThis vulnerability is mitigated by the fact this development module must be enabled on an attacker's target site, and the attacker must be able to upload a malicious file to the \"origin\" server configured for the module.","aliases":["CVE-2026-118576"],"modified":"2026-10-28T18:15:02.683333528Z","published":"2026-10-28T17:36:56Z","references":[{"type":"WEB","url":"https://www.drupal.org/sa-contrib-2026-286"}],"affected":[{"package":{"name":"drupal/stage_file_proxy","ecosystem":"Packagist:https://packages.drupal.org/8","purl":"pkg:composer/drupal/stage_file_proxy?repository_url=https:%2F%2Fpackages.drupal.org%2F8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.7"}],"database_specific":{"constraint":"\u003c3.1.7"}},{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.0.1"}],"database_specific":{"constraint":"\u003e=4.0.0 \u003c4.0.1"}}],"database_specific":{"affected_versions":"\u003c3.1.7 || \u003e=4.0.0 \u003c4.0.1","source":"https://github.com/DrupalSecurityTeam/drupal-advisory-database/blob/main/advisories/stage_file_proxy/DRUPAL-CONTRIB-2026-286.json"}}],"schema_version":"1.9.2","credits":[{"name":"Marcus Johansson (marcus_johansson)","contact":["https://www.drupal.org/u/marcus_johansson"]}]}