{"id":"CVE-2026-83608","title":"xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module","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 version 0.6.0 and earlier, the DOCUMENT_TYPE_NODE branch in lib/d…","severity":"high","cwe":["CWE-91"],"vendor":"xmldom","product":"@xmldom/xmldom","affected":["@xmldom/xmldom >= 0.7.0, <= 0.8.14","@xmldom/xmldom >= 0.9.0, <= 0.9.11","xmldom <= 0.6.0"],"patched":["@xmldom/xmldom 0.8.15","@xmldom/xmldom 0.9.12"],"published":"2026-09-01","updated":"2026-09-08","sourceUpdated":"2026-09-08T21:11:31.703","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83608","references":[{"url":"https://github.com/xmldom/xmldom/commit/57aec90ac57b4408ae7c5d1746bf2a693b5ed90e","label":"security-advisories@github.com"},{"url":"https://github.com/xmldom/xmldom/commit/85f12eb4d14b44de33216cfb72b50af4d24e9fdd","label":"security-advisories@github.com"},{"url":"https://github.com/xmldom/xmldom/pull/1071","label":"security-advisories@github.com"},{"url":"https://github.com/xmldom/xmldom/pull/1072","label":"security-advisories@github.com"},{"url":"https://github.com/xmldom/xmldom/releases/tag/0.8.15","label":"security-advisories@github.com"},{"url":"https://github.com/xmldom/xmldom/releases/tag/0.9.12","label":"security-advisories@github.com"},{"url":"https://github.com/xmldom/xmldom/security/advisories/GHSA-27p8-2357-5qqv","label":"security-advisories@github.com"},{"url":"https://github.com/xmldom/xmldom/security/advisories/GHSA-27p8-2357-5qqv","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83608"},{"url":"https://github.com/advisories/GHSA-27p8-2357-5qqv"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-83608.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-83608"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2526816"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-83608"},{"url":"https://access.redhat.com/errata/RHSA-2026:69248"}],"tags":["nvd","ghsa","npm","csaf","vex","red-hat"],"aliases":["GHSA-27p8-2357-5qqv"],"ecosystem":"npm","epss":0.00348,"epssPercentile":0.28488,"ingestedAt":"2026-09-08T21:11:12.320Z","cvss":3.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","cvssSource":"vendor","slug":"CVE-2026-83608","body":"## Overview\n\nxmldom 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 version 0.6.0 and earlier, the DOCUMENT_TYPE_NODE branch in lib/dom.js validates publicId, systemId, and internalSubset under requireWellFormed: true but emits DocumentType.name verbatim. A name containing > or whitespace can terminate the <!DOCTYPE ...> declaration and inject sibling markup; the value can be supplied through createDocumentType() on the 0.8.x and unscoped lines or through a direct DocumentType.name property write on every affected line. The default path and legacy creation-time behavior remain permissive, while the vulnerable strict path fails to enforce an XML Name. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-83608)\n\nAffected packages:\n\n- `@xmldom/xmldom >= 0.7.0, <= 0.8.14`\n- `@xmldom/xmldom >= 0.9.0, <= 0.9.11`\n- `xmldom <= 0.6.0`\n\nPatched in:\n\n- `@xmldom/xmldom 0.8.15`\n- `@xmldom/xmldom 0.9.12`\n\nSource: https://github.com/advisories/GHSA-27p8-2357-5qqv\n\n## Vendor advisories\n\n- **RHSA-2026:69248** · Red Hat · fixed in: Red Hat Developer Hub 1.9 · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69248)\n- **Red Hat VEX** · Important · affected: Red Hat Build of Podman Desktop, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat Fuse 7, Red Hat OpenShift AI (RHOAI), Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Fuse 7, Red Hat Build of Podman Desktop, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, … · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-83608.json)","depth":"twilight","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":208469,"id":"CVE-2026-83608","ts":1790005710916,"field":"cvss","old":null,"new":"3.1"}]}