CVE-2026-83614

xmldom , a pure JavaScript XML DOM parser, is vulnerable to quadratic-time denial of service via two independent code paths. The first, in lib/sax.js, causes parseElementStartPart to repeatedly rescan a malformed tag name to the next > during single-character recovery, reachable through the de...

CVE-2026-83614

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 0.3.0 through 0.6.0, two independent quadratic paths can cause denial of service. In lib/sax.js, parseElementStartPart...

CVE-2026-83613

xmldom , a pure JavaScript W3C XML DOM parser, is affected by a quadratic-time complexity flaw in DOMHandler.startElement (lib/dom-parser.js). Each parsed attribute is inserted via setAttributeNode, which triggers a linear getNamedItem/getNamedItemNS lookup in NamedNodeMap.setNamedItem (lib/dom.j...

CVE-2026-83613

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, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode...

CVE-2026-83613 xmldom: Quadratic-time attribute deduplication

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, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode...

CVE-2026-83613 xmldom: Quadratic-time attribute deduplication

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, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode...

CVE-2026-83612

xmldom is a pure JavaScript DOMParser and XMLSerializer module. In versions from 0.9.0-beta.1 up to the fix in 0.9.12 , HTML-mode parsing via DOMParser.parseFromString() mishandles mixed-case closing tags for raw-text elements (script, style, textarea, title). The root cause is that parseHtmlSpec...

CVE-2026-83612 xmldom: HTML raw-text closing-tag case mismatch causes output amplification

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. From 0.9.0-beta.1 until 0.9.12, HTML-mode parsing through DOMParser.parseFromString mishandles a mixed-case closing tag for the script, style, textarea, or title raw-text elements...

CVE-2026-83612

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. From 0.9.0-beta.1 until 0.9.12, HTML-mode parsing through DOMParser.parseFromString mishandles a mixed-case closing tag for the script, style, textarea, or title raw-text elements...

CVE-2026-83612 xmldom: HTML raw-text closing-tag case mismatch causes output amplification

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. From 0.9.0-beta.1 until 0.9.12, HTML-mode parsing through DOMParser.parseFromString mishandles a mixed-case closing tag for the script, style, textarea, or title raw-text elements...

CVE-2026-83611

xmldom (and @xmldom/xmldom ) is a pure JavaScript XML DOM parser. The vulnerability lies in DOMParser.parseFromString() , which can silently accept a malformed end tag where the tag name is followed by a line break and trailing content (e.g., ), closing the element and discarding the trailing con...

CVE-2026-83611

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, DOMParser.parseFromString can silently accept an end tag such as , close the element, and discard th...

CVE-2026-83611 xmldom: Parser silently accepts a not-well-formed end tag whose name is followed by a line break and trailing content

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, DOMParser.parseFromString can silently accept an end tag such as , close the element, and discard th...

CVE-2026-83610 xmldom: XML fragment injection via invalid EntityReference.nodeName during requireWellFormed serialization

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, Document.createEntityReferencename accepts an invalid name and the ENTITYREFERENCENODE serializer...

CVE-2026-83610

xmldom , a pure JavaScript XML DOM library, is vulnerable to XML fragment injection via Document.createEntityReference(name) accepting an invalid name. When the resulting EntityReference node is serialized with XMLSerializer.serializeToString() using requireWellFormed: true, the invalid nodeName ...

CVE-2026-83610

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, Document.createEntityReferencename accepts an invalid name and the ENTITYREFERENCENODE serializer...

CVE-2026-83610 xmldom: XML fragment injection via invalid EntityReference.nodeName during requireWellFormed serialization

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, Document.createEntityReferencename accepts an invalid name and the ENTITYREFERENCENODE serializer...

CVE-2026-83609

xmldom (a pure JavaScript W3C XML DOM module) is vulnerable in versions 0.9.0 through 0.9.12 due to a flaw in lib/grammar.js. The shared reg() builder compiles the anchored QName_exact validator with the multiline flag , causing ^ and $ to validate only one line rather than the full name. As a re...

CVE-2026-83609 xmldom: Creation-time XML Name/QName validation is bypassable via an embedded line terminator, allowing injection on the default serialization path

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. From 0.9.0 until 0.9.12, the shared reg builder in lib/grammar.js compiles the anchored QNameexact validator with the multiline flag, so ^ and $ validate only one line instead of the complete...

CVE-2026-83609 xmldom: Creation-time XML Name/QName validation is bypassable via an embedded line terminator, allowing injection on the default serialization path

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. From 0.9.0 until 0.9.12, the shared reg builder in lib/grammar.js compiles the anchored QNameexact validator with the multiline flag, so ^ and $ validate only one line instead of the complete...