CVE-2026-83617

A flaw was found in the @xmldom/xmldom library. The requireWellFormed validation for XML element and attribute names can be bypassed by embedding specific line terminator characters. This allows an attacker to inject malformed XML into the document, potentially leading to XML injection...

GHSA-C7Q8-3CH8-VQPV xmldom: Processing Instruction Target Injection Bypasses requireWellFormed

Summary Document.createProcessingInstruction in @xmldom/xmldom performs no validation on the target parameter. The requireWellFormed: true serializer option validates only for : in the target and a case-insensitive xml prefix, but does not check for characters. A in the target breaks the processi...

xmldom: Processing Instruction Target Injection Bypasses requireWellFormed

Summary Document.createProcessingInstruction in @xmldom/xmldom performs no validation on the target parameter. The requireWellFormed: true serializer option validates only for : in the target and a case-insensitive xml prefix, but does not check for characters. A in the target breaks the processi...

NPM: xmldom: Processing Instruction Target Injection Bypasses requireWellFormed

NPM: xmldom: Processing Instruction Target Injection Bypasses requireWellFormed vulnerability discovered by ? in WordPress Npm xmldom versions = 0.6.0...

GHSA-JXJR-3G7G-3944 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...

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...

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...

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-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...

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...

NPM: xmldom: Element name injection via createElement() bypasses requireWellFormed

NPM: xmldom: Element name injection via createElement bypasses requireWellFormed vulnerability discovered by ? in WordPress Npm xmldom versions = 0.6.0...

xmldom: Element name injection via createElement() bypasses requireWellFormed

Summary Document.createElement in @xmldom/xmldom accepts arbitrary strings as the tagName parameter with zero validation. The serializer emits the tag name verbatim into XML/HTML output. Critically, the requireWellFormed: true serializer option — the recommended mitigation from CVE-2026-41672,...

GHSA-W2RR-34G9-RVRJ xmldom: Element name injection via createElement() bypasses requireWellFormed

Summary Document.createElement in @xmldom/xmldom accepts arbitrary strings as the tagName parameter with zero validation. The serializer emits the tag name verbatim into XML/HTML output. Critically, the requireWellFormed: true serializer option — the recommended mitigation from CVE-2026-41672,...

GHSA-4W3W-2RP5-G8JM xmldom: Attribute name injection via setAttribute() bypasses requireWellFormed

Summary Element.setAttribute in @xmldom/xmldom bypasses attribute name validation by calling the private createAttributename method, which performs no validation. The public createAttribute method correctly validates names against an anchored QName pattern, but setAttribute never uses it. The...

NPM: xmldom: Attribute name injection via setAttribute() bypasses requireWellFormed

NPM: xmldom: Attribute name injection via setAttribute bypasses requireWellFormed vulnerability discovered by ? in WordPress Npm xmldom versions = 0.6.0...

NPM: xmldom: XML fragment injection via invalid EntityReference.nodeName during requireWellFormed serialization

NPM: xmldom: XML fragment injection via invalid EntityReference.nodeName during requireWellFormed serialization vulnerability discovered by ? in WordPress Npm xmldom versions = 0.6.0...

xmldom: XML fragment injection via invalid EntityReference.nodeName during requireWellFormed serialization

Summary An EntityReference node can be created with an invalid, attacker-controlled name through Document.createEntityReferencename. When this node is serialized directly with: js serializer.serializeToStringref, requireWellFormed: true the invalid nodeName is emitted into the serialized XML...

GHSA-6GMQ-8VP8-GCM6 xmldom: XML fragment injection via invalid EntityReference.nodeName during requireWellFormed serialization

Summary An EntityReference node can be created with an invalid, attacker-controlled name through Document.createEntityReferencename. When this node is serialized directly with: js serializer.serializeToStringref, requireWellFormed: true the invalid nodeName is emitted into the serialized XML...

XML Injection

Overview @xmldom/xmldom is a javascript ponyfill to provide the following APIs that are present in modern browsers to other runtimes. Since version 0.7.0 this package is published to npm as @xmldom/xmldom and no longer as xmldom Affected versions of this package are vulnerable to XML Injection vi...

XML Injection

Overview @xmldom/xmldom is a javascript ponyfill to provide the following APIs that are present in modern browsers to other runtimes. Since version 0.7.0 this package is published to npm as @xmldom/xmldom and no longer as xmldom Affected versions of this package are vulnerable to XML Injection in...