{"action":"Upgrade drupal/core to 10.5.12 or later.","affected":[{"fixed":"10.5.12","introduced":"0"},{"fixed":"10.6.11","introduced":"10.6.0"},{"fixed":"11.2.14","introduced":"11.2.0"},{"fixed":"11.3.12","introduced":"11.3.0"},{"fixed":"11.1.0","introduced":"11.0.0"},{"fixed":"11.2.0","introduced":"11.1.0"}],"component":"drupal/core","cve_ids":["CVE-2026-55803"],"ecosystem":"Packagist","epss":0.00353,"exploited":false,"fixed_versions":["10.5.12","10.6.11","11.2.14","11.3.12","11.1.0","11.2.0"],"id":"tcs_01M5KERCQC5B6BY39W40SZWD3S","modified_at":"2026-09-10T03:45:13.619969326Z","published_at":"2026-06-17T18:56:50Z","references":["https://osv.dev/vulnerability/DRUPAL-CORE-2026-005","https://www.drupal.org/sa-core-2026-005"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DRUPAL-CORE-2026-005","url":"https://osv.dev/vulnerability/DRUPAL-CORE-2026-005"}],"summary":"[SA-CORE-2019-003](https://www.drupal.org/sa-core-2019-003) added protection for fields that store serialized data to disallow direct writes via web services."}