CVE-2026-48590

{"id": "CVE-2026-48590", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48590", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-21T12:24:58.189871Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.1, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/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": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "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"}}]}, "affected": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "affectedData": [{"cpes": ["cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"], "repo": "https://github.com/joshnuss/xml_builder", "vendor": "joshnuss", "modules": ["'Elixir.XmlBuilder'"], "product": "xml_builder", "versions": [{"status": "affected", "version": "0.0.1", "lessThan": "2.4.1", "versionType": "semver"}], "packageURL": "pkg:hex/xml_builder", "packageName": "xml_builder", "programFiles": ["lib/xml_builder.ex"], "collectionURL": "https://repo.hex.pm", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.XmlBuilder':generate/1"}, {"name": "'Elixir.XmlBuilder':generate/2"}, {"name": "'Elixir.XmlBuilder':element/1"}, {"name": "'Elixir.XmlBuilder':element/2"}, {"name": "'Elixir.XmlBuilder':element/3"}]}, {"cpes": ["cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"], "repo": "https://github.com/joshnuss/xml_builder", "vendor": "joshnuss", "modules": ["'Elixir.XmlBuilder'"], "product": "xml_builder", "versions": [{"status": "affected", "version": "9fb49131ad3ee146a4c9db9bc175bdffe32e30a0", "lessThan": "d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859", "versionType": "git"}], "packageURL": "pkg:github/joshnuss/xml_builder", "packageName": "joshnuss/xml_builder", "programFiles": ["lib/xml_builder.ex"], "collectionURL": "https://github.com", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.XmlBuilder':generate/1"}, {"name": "'Elixir.XmlBuilder':generate/2"}, {"name": "'Elixir.XmlBuilder':element/1"}, {"name": "'Elixir.XmlBuilder':element/2"}, {"name": "'Elixir.XmlBuilder':element/3"}]}]}], "published": "2026-08-21T10:16:38.767", "references": [{"url": "https://cna.erlef.org/cves/CVE-2026-48590.html", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/joshnuss/xml_builder/commit/d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48590", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "description": [{"lang": "en", "value": "CWE-91"}]}], "descriptions": [{"lang": "en", "value": "XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection.\n\nThis vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.element/1, XmlBuilder.element/2, XmlBuilder.element/3.\n\nElement names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (<, >, \", ', &). An attacker who can influence a name argument (for example, an element name derived from a JSON object key or an HTTP form field name) can inject arbitrary XML markup including extra elements, comments, and event-handler attributes into the output document.\n\nThis issue affects xml_builder: from 0.0.1 before 2.4.1."}, {"lang": "es", "value": "Vulnerabilidad de inyecci\u00f3n XML en joshnuss xml_builder (m\u00f3dulo XmlBuilder) permite la suplantaci\u00f3n de contenido, inyecci\u00f3n XML.\n\nEsta vulnerabilidad est\u00e1 asociada con los archivos de programa lib/xml_builder.ex y las rutinas de programa XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.element/1, XmlBuilder.element/2, XmlBuilder.element/3.\n\nLos nombres de elementos, nombres de atributos e identificadores de tipo de documento (doctype) se interpolan textualmente en la salida XML serializada sin validaci\u00f3n ni escape de caracteres estructurales (<, >, ', ', &). Un atacante que puede influir en un argumento de nombre (por ejemplo, un nombre de elemento derivado de una clave de objeto JSON o un nombre de campo de formulario HTTP) puede inyectar marcado XML arbitrario incluyendo elementos adicionales, comentarios y atributos de gestor de eventos en el documento de salida.\n\nEste problema afecta a xml_builder: desde 0.0.1 anterior a 2.4.1."}], "lastModified": "2026-10-16T15:10:00.103", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}