CVE-2026-41673

xmldom: Denial of service via uncontrolled recursion in XML serialization

CVSS 8.7 HIGHEPSS 0.6%CWE-674

In short

The xmldom library crashes when processing XML documents with very deeply nested elements due to unlimited recursion during serialization. An attacker can send a specially crafted XML file to crash applications using vulnerable versions of this library.

Technical detail

Uncontrolled recursion in seven XML serialization traversal functions in lib/dom.js lacks depth limiting, allowing a deeply nested DOM tree to trigger stack exhaustion (RangeError). Attack vector is remote via malicious XML input; no authentication required. Impact is denial of service through application crash.

Summary generated and translated by AI from the official description.

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In @xmldom/xmldom prior to versions 0.9.10 and 0.8.13 and xmldom version 0.6.0 and prior, seven recursive traversals in lib/dom.js operate without a depth limit. A sufficiently deeply nested DOM tree causes a RangeError: Maximum call stack size exceeded, crashing the application. This issue has been patched in versions @xmldom/xmldom versions 0.9.10 and 0.8.13.

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

Affected products

xmldom · xmldom

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References