Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
xmldom xmldom
>= 0.1.5, <= 0.6.0affected
@xmldom xmldom
>= 0.7.0, < 0.8.15affected>= 0.9.0, < 0.9.12affected
References
- https://github.com/xmldom/xmldom/security/advisories/GHSA-965w-775f-mr7g ↗
- https://github.com/xmldom/xmldom/pull/1071 ↗
- https://github.com/xmldom/xmldom/pull/1072 ↗
- https://github.com/xmldom/xmldom/commit/954370f58c046223faf95ba77efcbc8ce014409d ↗
- https://github.com/xmldom/xmldom/commit/dabffe884e864eeecb1f515c716f875e1bc47ec1 ↗
- https://github.com/xmldom/xmldom/releases/tag/0.8.15 ↗
- https://github.com/xmldom/xmldom/releases/tag/0.9.12 ↗