HOMEVULNERABILITIESCVE-2021-32796
MEDIUM

CVE-2021-32796

CWE-116Published: July 27, 2021· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-32796 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Vendors & Products

xmldom_project1 product(s)
xmldom
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8b
PATCHhttps://github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8b
ADVISORYhttps://github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8q
ADVISORYhttps://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
ADVISORYhttps://github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8q
ADVISORYhttps://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/

All References (6)

→
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

Quick Facts

CVE IDCVE-2021-32796
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-116
CISA KEVNo
Affected1 vendor(s)
PublishedJul 27, 2021

Related CVEs (CWE-116)

CVE-2025-55729
10.0
CVE-2025-55730
10.0
CVE-2026-48358
10.0
CVE-2019-11325
9.8
CVE-2024-31866
9.8
CVE-2024-4177
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-32796 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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