GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-83615 (GCVE-0-2026-83615)

Vulnerability from cvelistv5 – Published: 2026-09-01 14:44 – Updated: 2026-09-03 15:57
VLAI
Title
xmldom: Quadratic-memory consumption
Summary
xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom versions 0.1.5 through 0.6.0, appendElement in lib/sax.js uses _copy to clone the complete currentNSMap for each nested element that declares a new namespace prefix. Keeping every ancestor map live on the parse stack creates quadratic peak namespace-map storage, so a small highly compressible XML document can exhaust the process heap before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:56 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Impacted products
Vendor Product Version CPE status
xmldom xmldom Affected: >= 0.1.5, <= 0.6.0
guessed Create a notification for this product.
@xmldom xmldom Affected: >= 0.7.0, < 0.8.15
Affected: >= 0.9.0, < 0.9.12
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-83615",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-03T15:56:55.590678Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-03T15:57:05.853Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "xmldom",
          "vendor": "xmldom",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.1.5, \u003c= 0.6.0"
            }
          ]
        },
        {
          "product": "xmldom",
          "vendor": "@xmldom",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.7.0, \u003c 0.8.15"
            },
            {
              "status": "affected",
              "version": "\u003e= 0.9.0, \u003c 0.9.12"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom versions 0.1.5 through 0.6.0, appendElement in lib/sax.js uses _copy to clone the complete currentNSMap for each nested element that declares a new namespace prefix. Keeping every ancestor map live on the parse stack creates quadratic peak namespace-map storage, so a small highly compressible XML document can exhaust the process heap before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-01T14:44:05.884Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g"
        },
        {
          "name": "https://github.com/xmldom/xmldom/pull/1071",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/xmldom/xmldom/pull/1071"
        },
        {
          "name": "https://github.com/xmldom/xmldom/pull/1072",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/xmldom/xmldom/pull/1072"
        },
        {
          "name": "https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d"
        },
        {
          "name": "https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1"
        },
        {
          "name": "https://github.com/xmldom/xmldom/releases/tag/0.8.15",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/xmldom/xmldom/releases/tag/0.8.15"
        },
        {
          "name": "https://github.com/xmldom/xmldom/releases/tag/0.9.12",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/xmldom/xmldom/releases/tag/0.9.12"
        }
      ],
      "source": {
        "advisory": "GHSA-965w-775f-mr7g",
        "discovery": "UNKNOWN"
      },
      "title": "xmldom: Quadratic-memory consumption"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-83615",
    "datePublished": "2026-09-01T14:44:05.884Z",
    "dateReserved": "2026-08-31T20:36:25.744Z",
    "dateUpdated": "2026-09-03T15:57:05.853Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-83615",
      "date": "2026-09-17",
      "epss": "0.00351",
      "percentile": "0.28596"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-09T01:51:03.000Z",
      "cve": "CVE-2026-83615",
      "id": "msrc_CVE-2026-83615",
      "initial_release_date": "2026-09-06T15:31:12.000Z",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "xmldom: Quadratic-memory consumption",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-83615.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-83615\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-01T15:17:39.887\",\"lastModified\":\"2026-09-08T21:11:31.703\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom versions 0.1.5 through 0.6.0, appendElement in lib/sax.js uses _copy to clone the complete currentNSMap for each nested element that declares a new namespace prefix. Keeping every ancestor map live on the parse stack creates quadratic peak namespace-map storage, so a small highly compressible XML document can exhaust the process heap before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"xmldom\",\"product\":\"xmldom\",\"versions\":[{\"version\":\"\u003e= 0.1.5, \u003c= 0.6.0\",\"status\":\"affected\"}]},{\"vendor\":\"@xmldom\",\"product\":\"xmldom\",\"versions\":[{\"version\":\"\u003e= 0.7.0, \u003c 0.8.15\",\"status\":\"affected\"},{\"version\":\"\u003e= 0.9.0, \u003c 0.9.12\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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\":8.7,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"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\":\"2026-09-03T15:56:55.590678Z\",\"id\":\"CVE-2026-83615\",\"options\":[{\"exploitation\":\"poc\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"references\":[{\"url\":\"https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/pull/1071\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/pull/1072\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/releases/tag/0.8.15\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/releases/tag/0.9.12\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-09-16T19:07:24+00:00",
      "cve": "CVE-2026-83615",
      "id": "CVE-2026-83615",
      "initial_release_date": "2026-09-01T14:44:05.884000+00:00",
      "product_status:known_affected": "11",
      "product_status:known_not_affected": "15",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "xmldom: @xmldom/xmldom: xmldom: Denial of Service via quadratic memory consumption",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-83615.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-02T01:01:06Z",
      "cve": "CVE-2026-83615",
      "id": "CVE-2026-83615",
      "initial_release_date": "2026-09-02T01:01:06Z",
      "product_status:known_affected": "43",
      "product_status:known_not_affected": "52",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-83615",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-83615.json",
      "version": "2"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-83615\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-03T15:56:55.590678Z\"}}}], \"references\": [{\"url\": \"https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-03T15:56:34.203Z\"}}], \"cna\": {\"title\": \"xmldom: Quadratic-memory consumption\", \"source\": {\"advisory\": \"GHSA-965w-775f-mr7g\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 8.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"xmldom\", \"product\": \"xmldom\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 0.1.5, \u003c= 0.6.0\"}]}, {\"vendor\": \"@xmldom\", \"product\": \"xmldom\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 0.7.0, \u003c 0.8.15\"}, {\"status\": \"affected\", \"version\": \"\u003e= 0.9.0, \u003c 0.9.12\"}]}], \"references\": [{\"url\": \"https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g\", \"name\": \"https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/xmldom/xmldom/pull/1071\", \"name\": \"https://github.com/xmldom/xmldom/pull/1071\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/xmldom/xmldom/pull/1072\", \"name\": \"https://github.com/xmldom/xmldom/pull/1072\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d\", \"name\": \"https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1\", \"name\": \"https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/xmldom/xmldom/releases/tag/0.8.15\", \"name\": \"https://github.com/xmldom/xmldom/releases/tag/0.8.15\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/xmldom/xmldom/releases/tag/0.9.12\", \"name\": \"https://github.com/xmldom/xmldom/releases/tag/0.9.12\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom versions 0.1.5 through 0.6.0, appendElement in lib/sax.js uses _copy to clone the complete currentNSMap for each nested element that declares a new namespace prefix. Keeping every ancestor map live on the parse stack creates quadratic peak namespace-map storage, so a small highly compressible XML document can exhaust the process heap before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770: Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-09-01T14:44:05.884Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-83615\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-03T15:57:05.853Z\", \"dateReserved\": \"2026-08-31T20:36:25.744Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-09-01T14:44:05.884Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


Loading…