Vulnerability Details : 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.
Products affected by CVE-2021-32796
- cpe:2.3:a:xmldom_project:xmldom:*:*:*:*:*:node.js:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-32796
0.39%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-32796
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
3.9
|
2.5
|
GitHub, Inc. |
CWE ids for CVE-2021-32796
-
The product does not properly neutralize special elements that are used in XML, allowing attackers to modify the syntax, content, or commands of the XML before it is processed by an end system.Assigned by: nvd@nist.gov (Primary)
-
The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2021-32796
-
https://github.com/xmldom/xmldom/security/advisories/GHSA-5fg8-2547-mr8q
Misinterpretation of malicious XML input · Advisory · xmldom/xmldom · GitHubThird Party Advisory
-
https://github.com/xmldom/xmldom/commit/7b4b743917a892d407356e055b296dcd6d107e8b
Merge pull request from GHSA-5fg8-2547-mr8q · xmldom/xmldom@7b4b743 · GitHubPatch;Third Party Advisory
-
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
Coordinated disclosure of XML round-trip vulnerabilities in Go libraryNot Applicable;Third Party Advisory
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