{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-47080", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-05-18T17:28:10.319Z", "datePublished": "2026-08-21T09:49:34.772Z", "dateUpdated": "2026-08-21T09:49:34.772Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.XmlBuilder'"], "packageName": "xml_builder", "packageURL": "pkg:hex/xml_builder", "product": "xml_builder", "programFiles": ["lib/xml_builder.ex"], "programRoutines": [{"name": "'Elixir.XmlBuilder':generate/1"}, {"name": "'Elixir.XmlBuilder':generate/2"}, {"name": "'Elixir.XmlBuilder':escape/1"}], "repo": "https://github.com/joshnuss/xml_builder", "vendor": "joshnuss", "versions": [{"lessThan": "2.4.1", "status": "affected", "version": "0.0.7", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.XmlBuilder'"], "packageName": "joshnuss/xml_builder", "packageURL": "pkg:github/joshnuss/xml_builder", "product": "xml_builder", "programFiles": ["lib/xml_builder.ex"], "programRoutines": [{"name": "'Elixir.XmlBuilder':generate/1"}, {"name": "'Elixir.XmlBuilder':generate/2"}, {"name": "'Elixir.XmlBuilder':escape/1"}], "repo": "https://github.com/joshnuss/xml_builder", "vendor": "joshnuss", "versions": [{"lessThan": "bfb1ada071ccc1e384c30f782197ca5154106706", "status": "affected", "version": "26766f884ed19adee1563522c7afb5f056a6f3b5", "versionType": "git"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.4.1", "versionStartIncluding": "0.0.7", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "remediation developer", "value": "Joshua Nussbaum"}, {"lang": "en", "type": "coordinator", "value": "Jonatan M\u00e4nnchen / EEF"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>XML Injection vulnerability in joshnuss xml_builder (<code>XmlBuilder</code> module) allows Content Spoofing, XML Injection.</p>\n<p>This vulnerability is associated with program files <code>lib/xml_builder.ex</code> and program routines <code>XmlBuilder.generate/1</code>, <code>XmlBuilder.generate/2</code>, <code>XmlBuilder.escape/1</code>.</p>\n<p>The <code>escape/1</code> clause for <code>{:cdata, data}</code> in <code>lib/xml_builder.ex</code> concatenates data verbatim between the CDATA opener <code>&lt;![CDATA[</code> and closer <code>]]&gt;</code> without rewriting or splitting on the embedded <code>]]&gt;</code> sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on <code>]]&gt;</code> and emit adjacent CDATA sections. An attacker who can supply input containing <code>]]&gt;</code> closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document.</p>\n<p>This issue affects xml_builder: from 0.0.7 before 2.4.1.</p>"}, {"base64": false, "type": "text/markdown", "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.escape/1`.\n\nThe `escape/1` clause for `{:cdata, data}` in `lib/xml_builder.ex` concatenates data verbatim between the CDATA opener `<![CDATA[` and closer `]]>` without rewriting or splitting on the embedded `]]>` sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on `]]>` and emit adjacent CDATA sections. An attacker who can supply input containing `]]>` closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document.\n\nThis issue affects xml_builder: from 0.0.7 before 2.4.1."}], "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.escape/1.\n\nThe escape/1 clause for {:cdata, data} in lib/xml_builder.ex concatenates data verbatim between the CDATA opener <![CDATA[ and closer ]]> without rewriting or splitting on the embedded ]]> sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on ]]> and emit adjacent CDATA sections. An attacker who can supply input containing ]]> closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document.\n\nThis issue affects xml_builder: from 0.0.7 before 2.4.1."}], "impacts": [{"capecId": "CAPEC-250", "descriptions": [{"lang": "en", "value": "CAPEC-250 XML Injection"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "baseScore": 2.1, "baseSeverity": "LOW", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-91", "description": "CWE-91 XML Injection (aka Blind XPath Injection)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-08-21T09:49:34.772Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-67r9-hmxw-h595"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-47080.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-47080"}, {"tags": ["patch"], "url": "https://github.com/joshnuss/xml_builder/commit/bfb1ada071ccc1e384c30f782197ca5154106706"}], "source": {"discovery": "EXTERNAL"}, "title": "CDATA Section Breakout via Unsanitised ]]> in xml_builder"}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.XmlBuilder'"], "packageName": "xml_builder", "packageURL": "pkg:hex/xml_builder", "product": "xml_builder", "programFiles": ["lib/xml_builder.ex"], "programRoutines": [{"name": "'Elixir.XmlBuilder':generate/1"}, {"name": "'Elixir.XmlBuilder':generate/2"}, {"name": "'Elixir.XmlBuilder':escape/1"}], "repo": "https://github.com/joshnuss/xml_builder", "vendor": "joshnuss", "versions": [{"lessThan": "2.4.1", "status": "affected", "version": "0.0.7", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.XmlBuilder'"], "packageName": "joshnuss/xml_builder", "packageURL": "pkg:github/joshnuss/xml_builder", "product": "xml_builder", "programFiles": ["lib/xml_builder.ex"], "programRoutines": [{"name": "'Elixir.XmlBuilder':generate/1"}, {"name": "'Elixir.XmlBuilder':generate/2"}, {"name": "'Elixir.XmlBuilder':escape/1"}], "repo": "https://github.com/joshnuss/xml_builder", "vendor": "joshnuss", "versions": [{"lessThan": "bfb1ada071ccc1e384c30f782197ca5154106706", "status": "affected", "version": "26766f884ed19adee1563522c7afb5f056a6f3b5", "versionType": "git"}]}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "cveTags": [], "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.escape/1.\n\nThe escape/1 clause for {:cdata, data} in lib/xml_builder.ex concatenates data verbatim between the CDATA opener <![CDATA[ and closer ]]> without rewriting or splitting on the embedded ]]> sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on ]]> and emit adjacent CDATA sections. An attacker who can supply input containing ]]> closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document.\n\nThis issue affects xml_builder: from 0.0.7 before 2.4.1."}], "id": "CVE-2026-47080", "lastModified": "2026-08-21T10:16:38.497", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.1, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}, "published": "2026-08-21T10:16:38.497", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://cna.erlef.org/cves/CVE-2026-47080.html"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/joshnuss/xml_builder/commit/bfb1ada071ccc1e384c30f782197ca5154106706"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-67r9-hmxw-h595"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://osv.dev/vulnerability/EEF-CVE-2026-47080"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-91"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

{}

{"created": "2026-08-21T11:30:04.179463+00:00", "updated": "2026-08-21T11:30:04.179468+00:00", "vendors": []}