CVE-2021-21366 — Vulnetix

CVE-2021-21366 PUBLISHED

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.

EPSS 1.34% · 80.4th percentile

Risk Scores

EPSS Score

1.34%

80.4th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:20.04:LTS	node-xmldom	0.1.27+ds-1, 0

Exploit Intelligence

CIRCL seen: CVE-2021-21366 (circl-sighting)
https://github.com/xmldom/xmldom/security/advisories/GHSA-h6q6-9hqw-rwfv (circl)
https://www.npmjs.com/package/xmldom (circl)
https://github.com/xmldom/xmldom/releases/tag/0.5.0 (circl)
https://github.com/xmldom/xmldom/commit/d4201b9dfbf760049f457f9f08a3888d48835135 (circl)
[debian-lts-announce] 20230101 [SECURITY] [DLA 3260-1] node-xmldom security update (circl)

Timeline

Mar 12, 2021 CVE Published
Apr 14, 2021 EPSS Score
Jun 23, 2021 EPSS Score
Aug 24, 2021 EPSS Score
Dec 27, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 28, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Jul 3, 2022 EPSS Score
Sep 4, 2022 EPSS Score
Nov 6, 2022 EPSS Score
Jan 8, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2021-21366 third-party-advisory
https://github.com/xmldom/xmldom/security/advisories/GHSA-h6q6-9hqw-rwfv third-party-advisory
https://github.com/xmldom/xmldom/commit/d4201b9dfbf760049f457f9f08a3888d48835135 third-party-advisory
https://github.com/xmldom/xmldom/releases/tag/0.5.0 third-party-advisory
https://www.npmjs.com/package/xmldom third-party-advisory
https://ubuntu.com/security/notices/USN-6102-1 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2021-21366 third-party-advisory

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