Misinterpretation of malicious XML input

中 5.3CVE-2021-32796 · GHSA-5fg8-2547-mr8q · 27/07/2021 公開 · 17/06/2026 更新

要点

CVE-2021-32796 は xmldom (xmldom project), @xmldom/xmldom, xmldom に影響する深刻度「中」 (CVSS 5.3) の脆弱性です。
今後30日間に悪用される確率（EPSS）：1.4%（全脆弱性の 71.8% より高い）。
対処：0.7.0 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
xmldom xmldom_project	`< 0.7.0`	`0.7.0`
@xmldom/xmldom npm	`< 0.7.0`	`0.7.0`
xmldom npm	`≤ 0.6.0`	修正版なし

概要

Impact

xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications.

Patches

Update to one of the fixed versions of @xmldom/xmldom (>=0.7.0)

See issue #271 for the status of publishing xmldom to npm or join #270 for Q&A/discussion until it's resolved.

Workarounds

Downstream applications can validate the input and reject the maliciously crafted documents.

References

Similar to this one reported on the Go standard library:

For more information

If you have any questions or comments about this advisory:

Open an issue in xmldom/xmldom
Email us: send an email to all addresses that are shown by npm owner ls @xmldom/xmldom

NVD の説明

xmldom is an open source pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.6.0 and older do not correctly escape special characters when serializing elements removed from their ancestor. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This issue has been resolved in version 0.7.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.