CVE-2021-32796

Name: CVE-2021-32796
Creator: NVD / NIST
Published: 2021-07-27T22:15:07.69+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.35%

Last modified Jun 17, 2026

CVE-2021-32796 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 1.35% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

1.35%

67.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Xmldom Project	Xmldom	< 0.7.0

References

https://github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8bPatch, Third Party Advisory
https://github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8qThird Party Advisory
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/Not Applicable, Third Party Advisory
https://github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8bPatch, Third Party Advisory
https://github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8qThird Party Advisory
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/Not Applicable, Third Party Advisory

Timeline

Published: Jul 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-32796?

How severe is CVE-2021-32796?

CVE-2021-32796 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32796?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-32796?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST