{"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 Männchen / 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":{"dateUpdated":"2026-08-21T09:49:34.772Z","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF"},"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"}},"cveMetadata":{"assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","assignerShortName":"EEF","cveId":"CVE-2026-47080","datePublished":"2026-08-21T09:49:34.772Z","dateReserved":"2026-05-18T17:28:10.319Z","dateUpdated":"2026-08-21T09:49:34.772Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"}