CVE-2026-63670

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{"affected": [{"affectedData": [{"product": "apostrophe", "vendor": "apostrophecms", "versions": [{"status": "affected", "version": "< 2.17.6"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ApostropheCMS is an open-source Node.js content management system. Prior to 2.17.6, sanitizeHtml() can pass disallowed executable markup through packages/sanitize-html/index.js when textarea or xmp is included in allowedTags because a literal solidus after the raw-text end-tag name is treated as text by htmlparser2 and the ontext handler emits that content without escaping, while a browser parses the following img onerror markup as active HTML. This issue is fixed in version 2.17.6."}, {"lang": "es", "value": "ApostropheCMS es un sistema de gesti\u00f3n de contenido de c\u00f3digo abierto basado en Node.js. Antes de la 2.17.6, sanitizeHtml() puede permitir el paso de marcado ejecutable no permitido a trav\u00e9s de packages/sanitize-html/index.js cuando textarea o xmp est\u00e1n incluidos en allowedTags porque una barra s\u00f3lida literal despu\u00e9s del nombre de la etiqueta de cierre de texto sin formato es tratada como texto por htmlparser2 y el gestor ontext emite ese contenido sin escapar, mientras que un navegador analiza el siguiente marcado img onerror como HTML activo. Este problema se ha solucionado en la versi\u00f3n 2.17.6."}], "id": "CVE-2026-63670", "lastModified": "2026-10-23T16:10:00.313", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-63670", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-18T18:07:52.564054Z", "version": "2.0.3"}}]}, "published": "2026-08-17T20:16:45.000", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/apostrophecms/apostrophe/commit/eae1fb2b72ec5d1c27d0977509c6482a0408f725"}, {"source": "security-advisories@github.com", "url": "https://github.com/apostrophecms/apostrophe/pull/5501"}, {"source": "security-advisories@github.com", "url": "https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw"}], "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": "[0,2.17.6)"}}], "enrichment": {"confidence": 94.0, "confidence_source": "matching", "scores": [{"score": 94.0, "source": "matching"}]}, "original": {"product": "apostrophe", "source": "cna", "vendor": "apostrophecms"}, "product": "apostrophecms", "vendor": "apostrophecms"}], "created": "2026-08-17T21:45:03.117903+00:00", "updated": "2026-08-21T21:19:28.353876+00:00", "vendors": ["apostrophecms", "apostrophecms$PRODUCT$apostrophecms"]}