CVE-2026-83615

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom versions 0.1.5 through 0.6.0, appendElement in lib/sax.js uses _copy to clone the complete currentNSMap for each nested element that declares a new namespace prefix. Keeping every ancestor map live on the parse stack creates quadratic peak namespace-map storage, so a small highly compressible XML document can exhaust the process heap before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.

CVSS

No CVSS.

References

Link	Resource
https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d
https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1
https://github.com/xmldom/xmldom/pull/1071
https://github.com/xmldom/xmldom/pull/1072
https://github.com/xmldom/xmldom/releases/tag/0.8.15
https://github.com/xmldom/xmldom/releases/tag/0.9.12
https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g
https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 15:17

Updated : 2026-09-08 21:11

NVD link : CVE-2026-83615

Mitre link : CVE-2026-83615

CVE.ORG link : CVE-2026-83615

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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