What is CVE-2021-32796?

CVE-2021-32796 is a medium-severity vulnerability in Xmldom, classified under Improper Encoding or Escaping of Output. CVSS score: 6.5/10. Published 2021-07-27.

How severe is CVE-2021-32796?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XPath Injection in Xmldom

CVE-2021-32796

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.

Published 2021-07-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.014 (71.3th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Xmldom — versions < 0.7.0
Xmldom Project

Weakness classification (CWE)

References

mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ (Third Party Advisory, Not Applicable)
github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8q (Third Party Advisory)
github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8b (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-32796?: CVE-2021-32796 is a medium-severity vulnerability in Xmldom, classified under Improper Encoding or Escaping of Output. CVSS score: 6.5/10. Published 2021-07-27.
How severe is CVE-2021-32796?: Medium severity. CVSS v3 base score is 6.5 out of 10.