{"id":"CVE-2026-73427","revision":"f00845726abd48379de1d3e8cfad19d9","records":[{"revision":"f00845726abd48379de1d3e8cfad19d9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73427","aliases":[],"title":"Trix: XSS via JSON deserialization bypass in drag-and-drop (Level0InputController)","description":"Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.18, Trix is vulnerable to cross-site scripting when a crafted application/x-trix-document JSON payload is dropped into an editor using the fallback Level0InputController, such as an embedded WebView without Input Events Level 2 support. The StringPiece.fromJSON method trusts href attributes from the JSON payload without sanitization, allowing a draggable element containing a javascript: URI to bypass DOMPurify sanitization and inject executable JavaScript into the DOM. Exploitation requires the victim to drag and drop attacker-controlled content, and server-side HTML sanitization can neutralize the payload on save. This issue is fixed in version 2.1.18.","state":0,"publishedAt":"2026-08-12T20:50:17.434+00:00","modifiedAt":"2026-08-13T13:51:28.767+00:00","affected":[{"ecosystem":"Vendor product","name":"trix","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"basecamp\",\n                    \"product\": \"trix\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.1.18\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":2.1,"severity":"LOW"}],"references":["https://github.com/basecamp/trix/security/advisories/GHSA-53p3-c7vp-4mcc","https://github.com/basecamp/trix/pull/1293","https://github.com/basecamp/trix/commit/9c0a993d9fc2ffe9d56b013b030bc238f9c0557c","https://github.com/basecamp/trix/releases/tag/v2.1.18"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73427","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73427","identifiers":["CVE-2026-73427"]},"retained":false,"historicalAffected":[]}],"coverage":[]}