CVE-2021-21366 — Misinterpretation of malicious XML input

Affected: xmldom

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.4.0 and older do not correctly preserve system identifiers, FPIs or namespaces when repeatedly parsing and serializing maliciously crafted documents. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This is fixed in version 0.5.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.

USN-6102-1 — node-xmldom vulnerabilities

Affected: Ubuntu:20.04:LTS: node-xmldom, Ubuntu:22.04:LTS: node-xmldom

It was discovered that xmldom incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause unexpected syntactic changes during XML processing. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-21366)

It was discovered that xmldom incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. (CVE-2022-37616, CVE-2022-39353)

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CVE-2021-21366 — Misinterpretation of malicious XML input

USN-6102-1 — node-xmldom vulnerabilities