CVE-2021-21366
Medium
Description
xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom versions 0.4.0 and older do not correctly preserve system identifiers, FPIs or namespaces when repeatedly parsing and serializing maliciously crafted documents. This may lead to unexpected syntactic changes during XML processing in some downstream applications. This is fixed in version 0.5.0. As a workaround downstream applications can validate the input and reject the maliciously crafted documents.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Xmldom
PublishedMar 12, 2021
First seenMar 12, 2021
Weakness typeCWE-436CWE-436CWE-115CWE-115
How to fix
Update
- xmldom_project xmldom0.5.0 or later
- xmldom0.5.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| xmldom_project xmldom | v < 0.5.0 | 0.5.0 |
| debian debian_linux | 10.0 | — |
| xmldomnpm | v < 0.5.0 | 0.5.0 |
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