How severe is CVE-2021-32796?

CVE-2021-32796 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-32796 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32796?

CVE-2021-32796 affects Xmldom Project Xmldom. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32796?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-32796 published?

CVE-2021-32796 was published on 2021-07-27 and last updated on 2026-06-17.

CVE-2021-32796

CVE-2021-32796 is a medium-severity vulnerability in Xmldom Project Xmldom with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-91.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-91
Affected product: Xmldom Project Xmldom
Published: 2021-07-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-32796?: CVE-2021-32796 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-32796 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32796?: CVE-2021-32796 affects Xmldom Project Xmldom. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32796?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-32796 published?: CVE-2021-32796 was published on 2021-07-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xmldom_project:xmldom:*:*:*:*:*:node.js:*:*

More vulnerabilities in Xmldom Project Xmldom

CVE-2022-37616 — Critical (CVSS 9.8): A prototype pollution vulnerability exists in the function copy in dom.js in the xmldom (published as @xmldom/xmldom)…
CVE-2022-39353 — Critical (CVSS 9.4): xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. xmldom…
CVE-2021-21366 — Medium (CVSS 4.3): xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom…

All CVEs affecting Xmldom Project Xmldom →

Other CWE-91 (XML Injection) vulnerabilities

CVE-2021-4140 — Critical (CVSS 10.0): It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability…
CVE-2023-43187 — Critical (CVSS 9.8): A remote code execution (RCE) vulnerability in the xmlrpc.php endpoint of NodeBB Inc NodeBB forum software prior to…
CVE-2019-19450 — Critical (CVSS 9.8): paraparser in ReportLab before 3.5.31 allows remote code execution because start_unichar in paraparser.py evaluates…
CVE-2021-37154 — Critical (CVSS 9.8): In ForgeRock Access Management (AM) before 7.0.2, the SAML2 implementation allows XML injection, potentially enabling a…
CVE-2020-29128 — Critical (CVSS 9.8): petl before 1.68, in some configurations, allows resolution of entities in an XML document.
CVE-2020-25216 — Critical (CVSS 9.8): yWorks yEd Desktop before 3.20.1 allows code execution via an XSL Transformation when using an XML file in conjunction…

Browse all CWE-91 (XML Injection) vulnerabilities →