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CRITICAL

CVE-2022-39353

CVSS v3

9.8

CRITICAL

EPSS Score

1.3 %

exploit probability, as of 2026-10-18

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • @xmldom/xmldomnpmfrom 0.9.0-beta.1 · fixed in 0.9.0-beta.4
  • xmldomnpmall versions · no fixed version listed

Vendor advisories

  • CVE-2022-39353 Red Hat Product Security

    xmldom: Allows multiple root elements in a DOM tree

Full record on NVD

Description

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`.

Technical details

Published
2022-11-02

Frequently asked questions

What is CVE-2022-39353?

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`.

Is CVE-2022-39353 actively exploited?

Active exploitation of CVE-2022-39353 has not been confirmed. Its EPSS score was 1.3% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-39353?

CVE-2022-39353 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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