CVE-2026-46392

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{"affected": [{"affectedData": [{"product": "haxcms-php", "vendor": "haxtheweb", "versions": [{"status": "affected", "version": "< 26.0.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0 of HAX CMS PHP, the `saveFile` endpoint validates upload extensions case-insensitively and writes the filename to disk verbatim, but the `.htaccess` rule that forces `Content-Disposition: attachment` on HTML files is case-sensitive. An HTML file uploaded with an uppercase extension (`.HTML`, `.Html`, `.HTM`) is still served as `text/html` but the forced-download header never applies, so the browser renders it inline and executes any embedded JavaScript in the HAXcms origin. This bypasses the mitigation shipped for CVE-2026-22704. Version 26.0.0 contains a fix."}, {"lang": "es", "value": "HAX CMS ayuda a gestionar el universo de micrositios con backends de PHP o NodeJs. Antes de la versi\u00f3n 26.0.0 de HAX CMS PHP, el endpoint \u2019saveFile\u2019 valida las extensiones de carga sin distinguir entre may\u00fasculas y min\u00fasculas y escribe el nombre de archivo en el disco textualmente, pero la regla de \u2019.htaccess\u2019 que fuerza \u2019Content-Disposition: attachment\u2019 en archivos HTML distingue entre may\u00fasculas y min\u00fasculas. Un archivo HTML subido con una extensi\u00f3n en may\u00fasculas (\u2019.HTML\u2019, \u2019.Html\u2019, \u2019.HTM\u2019) todav\u00eda se sirve como \u2019text/html\u2019 pero el encabezado de descarga forzada nunca se aplica, por lo que el navegador lo renderiza en l\u00ednea y ejecuta cualquier JavaScript incrustado en el origen de HAXcms. Esto elude la mitigaci\u00f3n enviada para CVE-2026-22704. La versi\u00f3n 26.0.0 contiene una correcci\u00f3n."}], "id": "CVE-2026-46392", "lastModified": "2026-10-26T11:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 5.8, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46392", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-05T19:11:18.494323Z", "version": "2.0.3"}}]}, "published": "2026-06-05T19:16:33.160", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-hg33-w4j2-95qp"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-hg33-w4j2-95qp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-178"}, {"lang": "en", "value": "CWE-434"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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