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 (67.9th 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
- Xmldom_project Xmldom
- Debian Debian_linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (Vendor Advisory)
- security-advisories@github.com (Product)
- security-advisories@github.com (Release Notes)
- security-advisories@github.com (Patch)
- security-advisories@github.com (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21366?
- CVE-2021-21366 is a medium-severity vulnerability in Xmldom, classified under CWE-115. 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.