CVE-2026-31868

{"id": "CVE-2026-31868", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-03-11T18:16:25.850", "references": [{"url": "https://github.com/parse-community/parse-server/releases/tag/8.6.30", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.4", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-v5hf-f4c3-m5rv", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.4 and 8.6.30, an attacker can upload a file with a file extension or content type that is not blocked by the default configuration of the Parse Server fileUpload.fileExtensions option. The file can contain malicious code, for example JavaScript in an SVG or XHTML file. When the file is accessed via its URL, the browser renders the file and executes the malicious code in the context of the Parse Server domain. This is a stored Cross-Site Scripting (XSS) vulnerability that can be exploited to steal session tokens, redirect users, or perform actions on behalf of other users. Affected file extensions and content types include .svgz, .xht, .xml, .xsl, .xslt, and content types application/xhtml+xml and application/xslt+xml for extensionless uploads. Uploading of .html, .htm, .shtml, .xhtml, and .svg files was already blocked. This vulnerability is fixed in 9.6.0-alpha.4 and 8.6.30."}, {"lang": "es", "value": "Parse Server es un backend de c\u00f3digo abierto que puede implementarse en cualquier infraestructura que pueda ejecutar Node.js. Antes de 9.6.0-alpha.4 y 8.6.30, un atacante puede subir un archivo con una extensi\u00f3n de archivo o tipo de contenido que no est\u00e1 bloqueado por la configuraci\u00f3n predeterminada de la opci\u00f3n fileUpload.fileExtensions de Parse Server. El archivo puede contener c\u00f3digo malicioso, por ejemplo JavaScript en un archivo SVG o XHTML. Cuando se accede al archivo a trav\u00e9s de su URL, el navegador renderiza el archivo y ejecuta el c\u00f3digo malicioso en el contexto del dominio de Parse Server. Esta es una vulnerabilidad de cross-site scripting (XSS) almacenado que puede ser explotada para robar tokens de sesi\u00f3n, redirigir usuarios o realizar acciones en nombre de otros usuarios. Las extensiones de archivo y tipos de contenido afectados incluyen .svgz, .xht, .xml, .xsl, .xslt, y los tipos de contenido application/xhtml+xml y application/xslt+xml para subidas sin extensi\u00f3n. La subida de archivos .html, .htm, .shtml, .xhtml y .svg ya estaba bloqueada. Esta vulnerabilidad est\u00e1 corregida en 9.6.0-alpha.4 y 8.6.30."}], "lastModified": "2026-03-13T18:25:43.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "4FB7EA4F-4C8A-4EA0-A380-AD65B42E631F", "versionEndExcluding": "8.6.30"}, {"criteria": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "1BAC01F8-0899-482C-8D91-64671BF2859A", "versionEndExcluding": "9.6.0", "versionStartIncluding": "9.0.0"}, {"criteria": "cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha1:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "BBED261F-CA1B-44BC-9C3A-37378590EFEE"}, {"criteria": "cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha2:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "EDC98AF7-8620-4A25-9BE5-623672599677"}, {"criteria": "cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha3:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "DF340605-8CC8-4543-9F5D-E8602D258CED"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}