EUVD-2026-69241

xmldom: requireWellFormed element/attribute name validation is bypassable via an embedded line terminator...

xmldom: requireWellFormed element/attribute name validation is bypassable via an embedded line terminator

Summary An embedded line terminator bypasses the requireWellFormed serializer check for element and attribute names. The check was added to fix GHSA-w2rr-34g9-rvrj and GHSA-4w3w-2rp5-g8jm; a name whose first line is well-formed slips past it and is serialized verbatim, so the characters after the...

EUVD-2026-69219

xmldom: DocType name Injection Bypasses requireWellFormed...

GHSA-27P8-2357-5QQV xmldom: DocType `name` Injection Bypasses requireWellFormed

Summary The @xmldom/xmldom serializer emits DocumentType.name verbatim into the declaration with no well-formedness guard. GHSA-f6ww-3ggp-fr8h CVE-2026-41674 hardened the serializer's requireWellFormed path for a DocumentType's sibling fields — publicId, systemId, and internalSubset — but it did...

NPM: xmldom: DocType `name` Injection Bypasses requireWellFormed

NPM: xmldom: DocType name Injection Bypasses requireWellFormed vulnerability discovered by ? in WordPress Npm xmldom versions = 0.6.0...

xmldom: DocType `name` Injection Bypasses requireWellFormed

Summary The @xmldom/xmldom serializer emits DocumentType.name verbatim into the declaration with no well-formedness guard. GHSA-f6ww-3ggp-fr8h CVE-2026-41674 hardened the serializer's requireWellFormed path for a DocumentType's sibling fields — publicId, systemId, and internalSubset — but it did...

GHSA-3PX3-54CX-RMW9 xmldom: Creation-time XML Name/QName validation is bypassable via an embedded line terminator, allowing injection on the default serialization path

Summary An embedded line terminator bypasses xmldom's always-on, WHATWG-mandated creation-time name validation. createElementNS, createAttributeNS, createDocumentType, and createAttribute should reject a malformed qualified name with InvalidCharacterError, but a name whose first line is well-form...

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

Summary An embedded line terminator bypasses xmldom's always-on, WHATWG-mandated creation-time name validation. createElementNS, createAttributeNS, createDocumentType, and createAttribute should reject a malformed qualified name with InvalidCharacterError, but a name whose first line is well-form...

EUVD-2026-69220

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

GHSA-VR34-HP96-76PP xmldom: requireWellFormed DocType publicId/systemId validation is bypassable via an embedded line terminator

Summary An embedded line terminator bypasses the requireWellFormed serializer check for a DocumentType's publicId and systemId. The check was added to fix GHSA-f6ww-3ggp-fr8h; an id whose first line is a valid literal slips past it and is emitted verbatim into the declaration, so the markup after...

EUVD-2026-69244

xmldom: requireWellFormed DocType publicId/systemId validation is bypassable via an embedded line terminator...

xmldom: requireWellFormed DocType publicId/systemId validation is bypassable via an embedded line terminator

Summary An embedded line terminator bypasses the requireWellFormed serializer check for a DocumentType's publicId and systemId. The check was added to fix GHSA-f6ww-3ggp-fr8h; an id whose first line is a valid literal slips past it and is emitted verbatim into the declaration, so the markup after...

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

Summary xmldom's parser silently accepts a not-well-formed end tag whose valid name is followed by trailing content — e.g. . The element is closed, the trailing content is discarded, and no error is reported, even though the XML end-tag production allows only optional whitespace after the name an...

EUVD-2026-69225

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

GHSA-6H8R-XR42-GP59 xmldom: Parser silently accepts a not-well-formed end tag whose name is followed by a line break and trailing content

Summary xmldom's parser silently accepts a not-well-formed end tag whose valid name is followed by trailing content — e.g. . The element is closed, the trailing content is discarded, and no error is reported, even though the XML end-tag production allows only optional whitespace after the name an...

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

NPM: xmldom: Parser silently accepts a not-well-formed end tag whose name is followed by a line break and trailing content vulnerability discovered by ? in WordPress Npm xmldom versions = 0.6.0...

EUVD-2026-69231

xmldom: Quadratic-time attribute deduplication...

NPM: xmldom: Quadratic-time attribute deduplication

NPM: xmldom: Quadratic-time attribute deduplication vulnerability discovered by ? in WordPress Npm xmldom versions = 0.6.0...

xmldom: Quadratic-time attribute deduplication

Summary xmldom builds the attribute collection of every parsed element by inserting attributes one at a time into a DOM NamedNodeMap. Each insertion first performs a linear scan of all already-inserted attributes to enforce the DOM uniqueness rule no two attributes with the same qualified name /...

GHSA-8344-3JMQ-59R6 xmldom: Quadratic-time attribute deduplication

Summary xmldom builds the attribute collection of every parsed element by inserting attributes one at a time into a DOM NamedNodeMap. Each insertion first performs a linear scan of all already-inserted attributes to enforce the DOM uniqueness rule no two attributes with the same qualified name /...