CVE-2022-39353: Debian Linux

Critical severity, CVSS 9.8. EPSS: 1.3% chance of exploitation in the next 30 days.

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. xmldom parses XML that is not well-formed because it contains multiple top level elements, and adds all root nodes to the `childNodes` collection of the `Document`, without reporting any error or throwing. This breaks the assumption that there is only a single root node in the tree, which led to issuance of CVE-2022-39299 as it is a potential issue for dependents. Update to @xmldom/xmldom@~0.7.7, @xmldom/xmldom@~0.8.4 (dist-tag latest) or @xmldom/xmldom@>=0.9.0-beta.4 (dist-tag next). As a workaround, please one of the following approaches depending on your use case: instead of searching for elements in the whole DOM, only search in the `documentElement`or reject a document with a document that has more then 1 `childNode`.

Affected products

• Debian Debian Linux: version 10.0 only
• Xmldom Project Xmldom: before 0.6.0 (fixed in 0.6.0); from 0.7.0, before 0.7.7 (fixed in 0.7.7); from 0.8.0, before 0.8.4 (fixed in 0.8.4); version 0.9.0 only

Published 2022-11-02. Last modified 2026-06-17.