{"cve":{"cve_id":"CVE-2026-56393","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00183,"epss_percentile":0.07978,"epss_as_of":"2026-06-23","description":"Craft CMS 4.x (>= 4.0.0-RC1, < 4.17.0-beta.1) and 5.x (>= 5.0.0-RC1, < 5.9.0-beta.1) contain multiple stored cross-site scripting vulnerabilities where settings names and field option labels are rendered without sanitization (e.g., via the checkbox.twig template, which used {{ label|raw }}). An authenticated administrator (with allowAdminChanges enabled) can inject malicious payloads into section names, volume names, user group names, global set names, generated field names, checkbox/radio option labels, and custom source labels, causing arbitrary JavaScript to execute in other users' control-panel sessions. Fixed in 4.17.0-beta.1 and 5.9.0-beta.1.","published_at":"2026-06-21T13:27:01.755000Z","last_modified_at":null,"cvss_v3_score":4.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":4.6,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","cvss_v4_severity":"MEDIUM","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-79"],"nvd_references":["https://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvx","https://github.com/craftcms/cms/commit/943152d2246b36f12adf161a03b8695b773d9276","https://github.com/craftcms/cms/commit/67780a778c6ec04e68e64a0b1177c168306144a2","https://www.vulncheck.com/advisories/craft-cms-multiple-stored-cross-site-scripting-in-settings-names-and-field-options"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:57.197036Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"H","value_label":"High"},{"metric":"UI","name":"User Interaction","value":"R","value_label":"Required"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"H","value_label":"High"},{"metric":"UI","name":"User Interaction","value":"A","value_label":"Active"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"N","value_label":"None"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"L","value_label":"Low"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"L","value_label":"Low"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"craftcms","vendor_name":"craftcms","product_slug":"cms","product_name":"cms","version_start":"5.0.0-RC1","version_start_inclusive":true,"version_end":"5.9.0-beta.1","version_end_inclusive":false,"cpe23_uri":"cve5:craftcms:cms:5.0.0-RC1:5.9.0-beta.1"},{"vendor_slug":"craftcms","vendor_name":"craftcms","product_slug":"cms","product_name":"cms","version_start":"5.9.0-beta.1","version_start_inclusive":true,"version_end":"5.9.0-beta.1","version_end_inclusive":true,"cpe23_uri":"cve5:craftcms:cms:5.9.0-beta.1:5.9.0-beta.1"},{"vendor_slug":"craftcms","vendor_name":"craftcms","product_slug":"cms","product_name":"cms","version_start":"4.0.0-RC1","version_start_inclusive":true,"version_end":"4.17.0-beta.1","version_end_inclusive":false,"cpe23_uri":"cve5:craftcms:cms:4.0.0-RC1:4.17.0-beta.1"},{"vendor_slug":"craftcms","vendor_name":"craftcms","product_slug":"cms","product_name":"cms","version_start":"4.17.0-beta.1","version_start_inclusive":true,"version_end":"4.17.0-beta.1","version_end_inclusive":true,"cpe23_uri":"cve5:craftcms:cms:4.17.0-beta.1:4.17.0-beta.1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvx","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/craftcms/cms/commit/943152d2246b36f12adf161a03b8695b773d9276","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/craftcms/cms/commit/67780a778c6ec04e68e64a0b1177c168306144a2","source_type":"PATCH","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/craft-cms-multiple-stored-cross-site-scripting-in-settings-names-and-field-options","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-06-21T13:27:01.755000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:42.709123Z","label":"CVSS score revised","source":"cvelistv5"}]}