CVE-2026-48590 (GCVE-0-2026-48590)

Vulnerability from cvelistv5 – Published: 2026-08-21 09:51 – Updated: 2026-08-21 12:25
VLAI
Title
Element and Attribute Names Injected Verbatim into XML Output in xml_builder
Summary
XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection. This 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. Element 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. This issue affects xml_builder: from 0.0.1 before 2.4.1.
Severity
2.1 (Low)
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
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 12:24 UTC
CWE
  • CWE-91 - XML Injection (aka Blind XPath Injection)
Assigner
References
Impacted products
Vendor Product Version CPE status
joshnuss xml_builder Affected: 0.0.1 , < 2.4.1 (semver)
    cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*
Create a notification for this product.
joshnuss xml_builder Affected: 9fb49131ad3ee146a4c9db9bc175bdffe32e30a0 , < d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859 (git)
    cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Peter Ullrich Joshua Nussbaum Jonatan Männchen / EEF
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-48590",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-21T12:24:58.189871Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-21T12:25:33.127Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.hex.pm",
          "cpes": [
            "cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.XmlBuilder\u0027"
          ],
          "packageName": "xml_builder",
          "packageURL": "pkg:hex/xml_builder",
          "product": "xml_builder",
          "programFiles": [
            "lib/xml_builder.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:generate/1"
            },
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:generate/2"
            },
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:element/1"
            },
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:element/2"
            },
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:element/3"
            }
          ],
          "repo": "https://github.com/joshnuss/xml_builder",
          "vendor": "joshnuss",
          "versions": [
            {
              "lessThan": "2.4.1",
              "status": "affected",
              "version": "0.0.1",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.XmlBuilder\u0027"
          ],
          "packageName": "joshnuss/xml_builder",
          "packageURL": "pkg:github/joshnuss/xml_builder",
          "product": "xml_builder",
          "programFiles": [
            "lib/xml_builder.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:generate/1"
            },
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:generate/2"
            },
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:element/1"
            },
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:element/2"
            },
            {
              "name": "\u0027Elixir.XmlBuilder\u0027:element/3"
            }
          ],
          "repo": "https://github.com/joshnuss/xml_builder",
          "vendor": "joshnuss",
          "versions": [
            {
              "lessThan": "d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859",
              "status": "affected",
              "version": "9fb49131ad3ee146a4c9db9bc175bdffe32e30a0",
              "versionType": "git"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2.4.1",
                  "versionStartIncluding": "0.0.1",
                  "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": "\u003cp\u003eXML Injection vulnerability in joshnuss xml_builder (\u003ccode\u003eXmlBuilder\u003c/code\u003e module) allows Content Spoofing, XML Injection.\u003c/p\u003e\n\u003cp\u003eThis vulnerability is associated with program files \u003ccode\u003elib/xml_builder.ex\u003c/code\u003e and program routines \u003ccode\u003eXmlBuilder.generate/1\u003c/code\u003e, \u003ccode\u003eXmlBuilder.generate/2\u003c/code\u003e, \u003ccode\u003eXmlBuilder.element/1\u003c/code\u003e, \u003ccode\u003eXmlBuilder.element/2\u003c/code\u003e, \u003ccode\u003eXmlBuilder.element/3\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eElement names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (\u003ccode\u003e\u0026lt;\u003c/code\u003e, \u003ccode\u003e\u0026gt;\u003c/code\u003e, \u003ccode\u003e\"\u003c/code\u003e, \u003ccode\u003e\u0027\u003c/code\u003e, \u003ccode\u003e\u0026amp;\u003c/code\u003e). 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.\u003c/p\u003e\n\u003cp\u003eThis issue affects xml_builder: from 0.0.1 before 2.4.1.\u003c/p\u003e"
            },
            {
              "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.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 (`\u003c`, `\u003e`, `\"`, `\u0027`, `\u0026`). 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."
            }
          ],
          "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 (\u003c, \u003e, \", \u0027, \u0026). 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."
        }
      ],
      "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": "2026-08-21T09:51:25.412Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "related"
          ],
          "url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-48590.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-48590"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/joshnuss/xml_builder/commit/d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Element and Attribute Names Injected Verbatim into XML Output in xml_builder"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-48590",
    "datePublished": "2026-08-21T09:51:25.412Z",
    "dateReserved": "2026-05-22T09:36:56.833Z",
    "dateUpdated": "2026-08-21T12:25:33.127Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-48590",
      "date": "2026-08-22",
      "epss": "0.00167",
      "percentile": "0.06473"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-48590\",\"sourceIdentifier\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"published\":\"2026-08-21T10:16:38.767\",\"lastModified\":\"2026-08-21T13:18:06.993\",\"vulnStatus\":\"Received\",\"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.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 (\u003c, \u003e, \\\", \u0027, \u0026). 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.\"}],\"affected\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"affectedData\":[{\"vendor\":\"joshnuss\",\"product\":\"xml_builder\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://repo.hex.pm\",\"packageName\":\"xml_builder\",\"cpes\":[\"cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*\"],\"modules\":[\"\u0027Elixir.XmlBuilder\u0027\"],\"programFiles\":[\"lib/xml_builder.ex\"],\"programRoutines\":[{\"name\":\"\u0027Elixir.XmlBuilder\u0027:generate/1\"},{\"name\":\"\u0027Elixir.XmlBuilder\u0027:generate/2\"},{\"name\":\"\u0027Elixir.XmlBuilder\u0027:element/1\"},{\"name\":\"\u0027Elixir.XmlBuilder\u0027:element/2\"},{\"name\":\"\u0027Elixir.XmlBuilder\u0027:element/3\"}],\"repo\":\"https://github.com/joshnuss/xml_builder\",\"packageURL\":\"pkg:hex/xml_builder\",\"versions\":[{\"version\":\"0.0.1\",\"lessThan\":\"2.4.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"joshnuss\",\"product\":\"xml_builder\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://github.com\",\"packageName\":\"joshnuss/xml_builder\",\"cpes\":[\"cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*\"],\"modules\":[\"\u0027Elixir.XmlBuilder\u0027\"],\"programFiles\":[\"lib/xml_builder.ex\"],\"programRoutines\":[{\"name\":\"\u0027Elixir.XmlBuilder\u0027:generate/1\"},{\"name\":\"\u0027Elixir.XmlBuilder\u0027:generate/2\"},{\"name\":\"\u0027Elixir.XmlBuilder\u0027:element/1\"},{\"name\":\"\u0027Elixir.XmlBuilder\u0027:element/2\"},{\"name\":\"\u0027Elixir.XmlBuilder\u0027:element/3\"}],\"repo\":\"https://github.com/joshnuss/xml_builder\",\"packageURL\":\"pkg:github/joshnuss/xml_builder\",\"versions\":[{\"version\":\"9fb49131ad3ee146a4c9db9bc175bdffe32e30a0\",\"lessThan\":\"d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859\",\"versionType\":\"git\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"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\",\"baseScore\":2.1,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"PRESENT\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"LOW\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-21T12:24:58.189871Z\",\"id\":\"CVE-2026-48590\",\"options\":[{\"exploitation\":\"poc\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-91\"}]}],\"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\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-48590\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-21T12:24:58.189871Z\"}}}], \"references\": [{\"url\": \"https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-21T12:25:23.775Z\"}}], \"cna\": {\"title\": \"Element and Attribute Names Injected Verbatim into XML Output in xml_builder\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"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\"}], \"impacts\": [{\"capecId\": \"CAPEC-250\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-250 XML Injection\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"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\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"LOW\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/joshnuss/xml_builder\", \"vendor\": \"joshnuss\", \"modules\": [\"\u0027Elixir.XmlBuilder\u0027\"], \"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\": \"\u0027Elixir.XmlBuilder\u0027:generate/1\"}, {\"name\": \"\u0027Elixir.XmlBuilder\u0027:generate/2\"}, {\"name\": \"\u0027Elixir.XmlBuilder\u0027:element/1\"}, {\"name\": \"\u0027Elixir.XmlBuilder\u0027:element/2\"}, {\"name\": \"\u0027Elixir.XmlBuilder\u0027:element/3\"}]}, {\"cpes\": [\"cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/joshnuss/xml_builder\", \"vendor\": \"joshnuss\", \"modules\": [\"\u0027Elixir.XmlBuilder\u0027\"], \"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\": \"\u0027Elixir.XmlBuilder\u0027:generate/1\"}, {\"name\": \"\u0027Elixir.XmlBuilder\u0027:generate/2\"}, {\"name\": \"\u0027Elixir.XmlBuilder\u0027:element/1\"}, {\"name\": \"\u0027Elixir.XmlBuilder\u0027:element/2\"}, {\"name\": \"\u0027Elixir.XmlBuilder\u0027:element/3\"}]}], \"references\": [{\"url\": \"https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-48590.html\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-48590\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/joshnuss/xml_builder/commit/d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859\", \"tags\": [\"patch\"]}], \"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 (\u003c, \u003e, \\\", \u0027, \u0026). 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.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eXML Injection vulnerability in joshnuss xml_builder (\u003ccode\u003eXmlBuilder\u003c/code\u003e module) allows Content Spoofing, XML Injection.\u003c/p\u003e\\n\u003cp\u003eThis vulnerability is associated with program files \u003ccode\u003elib/xml_builder.ex\u003c/code\u003e and program routines \u003ccode\u003eXmlBuilder.generate/1\u003c/code\u003e, \u003ccode\u003eXmlBuilder.generate/2\u003c/code\u003e, \u003ccode\u003eXmlBuilder.element/1\u003c/code\u003e, \u003ccode\u003eXmlBuilder.element/2\u003c/code\u003e, \u003ccode\u003eXmlBuilder.element/3\u003c/code\u003e.\u003c/p\u003e\\n\u003cp\u003eElement names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (\u003ccode\u003e\u0026lt;\u003c/code\u003e, \u003ccode\u003e\u0026gt;\u003c/code\u003e, \u003ccode\u003e\\\"\u003c/code\u003e, \u003ccode\u003e\u0027\u003c/code\u003e, \u003ccode\u003e\u0026amp;\u003c/code\u003e). 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.\u003c/p\u003e\\n\u003cp\u003eThis issue affects xml_builder: from 0.0.1 before 2.4.1.\u003c/p\u003e\", \"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.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 (`\u003c`, `\u003e`, `\\\"`, `\u0027`, `\u0026`). 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.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-91\", \"description\": \"CWE-91 XML Injection (aka Blind XPath Injection)\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.4.1\", \"versionStartIncluding\": \"0.0.1\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-08-21T09:51:25.412Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-48590\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-21T12:25:33.127Z\", \"dateReserved\": \"2026-05-22T09:36:56.833Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-08-21T09:51:25.412Z\", \"assignerShortName\": \"EEF\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.