CVE-2026-73426

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{"affected": [{"affectedData": [{"product": "trix", "vendor": "basecamp", "versions": [{"status": "affected", "version": "< 2.1.17"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.17, Trix is vulnerable to cross-site scripting when a data-trix-serialized-attributes attribute bypasses the DOMPurify sanitizer. An attacker can craft HTML containing a data-trix-serialized-attributes attribute with a malicious payload that, when rendered, executes arbitrary JavaScript in the user's session and may perform unauthorized actions or disclose sensitive information. This issue is fixed in version 2.1.17."}, {"lang": "es", "value": "Trix es un editor de texto enriquecido de lo que ves es lo que obtienes para la escritura diaria. Antes de 2.1.17, Trix es vulnerable a cross-site scripting cuando un atributo data-trix-serialized-attributes omite el saneador DOMPurify. Un atacante puede elaborar HTML que contiene un atributo data-trix-serialized-attributes con una carga \u00fatil maliciosa que, al renderizarse, ejecuta JavaScript arbitrario en la sesi\u00f3n del usuario y puede realizar acciones no autorizadas o divulgar informaci\u00f3n sensible. Este problema se corrige en la versi\u00f3n 2.1.17."}], "id": "CVE-2026-73426", "lastModified": "2026-10-22T22:10:00.250", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-73426", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-18T17:19:19.823365Z", "version": "2.0.3"}}]}, "published": "2026-08-18T15:17:08.043", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/basecamp/trix/commit/3229c29c771ded4d247ed79b2ccd2cd05c4e74b4"}, {"source": "security-advisories@github.com", "url": "https://github.com/basecamp/trix/commit/53197ab5a142e6b0b76127cb790726b274eaf1bc"}, {"source": "security-advisories@github.com", "url": "https://github.com/basecamp/trix/pull/1282"}, {"source": "security-advisories@github.com", "url": "https://github.com/basecamp/trix/releases/tag/v2.1.17"}, {"source": "security-advisories@github.com", "url": "https://github.com/basecamp/trix/security/advisories/GHSA-qmpg-8xg6-ph5q"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.1.17)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "trix", "source": "cna", "vendor": "basecamp"}, "product": "trix", "vendor": "basecamp"}], "created": "2026-08-18T16:30:05.789798+00:00", "updated": "2026-08-18T17:30:15.509480+00:00", "vendors": ["basecamp", "basecamp$PRODUCT$trix"]}