{"action":"Upgrade drupal/block_class to 4.0.1 or later.","affected":[{"fixed":"4.0.1","introduced":"4.0.0"}],"component":"drupal/block_class","cve_ids":["CVE-2025-3902"],"ecosystem":"Packagist","ecosystem_qualifier":"Packagist:https://packages.drupal.org/8","epss":0.00246,"exploited":false,"fixed_versions":["4.0.1"],"id":"tcs_01M5MF7S6GJPN5V6EGHD1M0V3M","modified_at":"2026-09-10T03:45:37.093409779Z","published_at":"2025-04-23T16:59:01Z","references":["https://osv.dev/vulnerability/DRUPAL-CONTRIB-2025-043","https://www.drupal.org/sa-contrib-2025-043"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"DRUPAL-CONTRIB-2025-043","url":"https://osv.dev/vulnerability/DRUPAL-CONTRIB-2025-043"},{"source":"nvd","source_id":"CVE-2025-3902","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3902"}],"summary":"Block Class enables you to add custom attributes to blocks."}