{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-73427", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-12T14:32:11.796Z", "datePublished": "2026-08-12T20:50:17.434Z", "dateUpdated": "2026-08-13T13:51:28.767Z"}, "containers": {"cna": {"title": "Trix: XSS via JSON deserialization bypass in drag-and-drop (Level0InputController)", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 2.1, "baseSeverity": "LOW", "vectorString": "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", "version": "4.0"}}], "references": [{"name": "https://github.com/basecamp/trix/security/advisories/GHSA-53p3-c7vp-4mcc", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/basecamp/trix/security/advisories/GHSA-53p3-c7vp-4mcc"}, {"name": "https://github.com/basecamp/trix/pull/1293", "tags": ["x_refsource_MISC"], "url": "https://github.com/basecamp/trix/pull/1293"}, {"name": "https://github.com/basecamp/trix/commit/9c0a993d9fc2ffe9d56b013b030bc238f9c0557c", "tags": ["x_refsource_MISC"], "url": "https://github.com/basecamp/trix/commit/9c0a993d9fc2ffe9d56b013b030bc238f9c0557c"}, {"name": "https://github.com/basecamp/trix/releases/tag/v2.1.18", "tags": ["x_refsource_MISC"], "url": "https://github.com/basecamp/trix/releases/tag/v2.1.18"}], "affected": [{"vendor": "basecamp", "product": "trix", "versions": [{"version": "< 2.1.18", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-12T20:50:17.434Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-53p3-c7vp-4mcc", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-13T13:51:16.963185Z", "id": "CVE-2026-73427", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-13T13:51:28.767Z"}}]}}

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