Vulnerability in Xmldom
CVE-2021-21366
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 serializ…
EPSS: 0.013 (80.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Xmldom — versions < 0.5.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/xmldom/xmldom/security/advisories/GHSA-h6q6-9hqw-rwfv
- www.npmjs.com/package/xmldom
- github.com/xmldom/xmldom/releases/tag/0.5.0
- github.com/xmldom/xmldom/commit/d4201b9dfbf760049f457f9f08a3888d48835135
- [debian-lts-announce] 20230101 [SECURITY] [DLA 3260-1] node-xmldom security update (mailing-list)
Frequently asked questions
- What is CVE-2021-21366?
- CVE-2021-21366 is a medium-severity vulnerability in Xmldom, classified under CWE-436. CVSS score: 4.3/10. Published 2021-03-12.
- How severe is CVE-2021-21366?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2021-21366 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.