VulnerabilityModified

CVE-2021-21366

MEDIUM 4.3EPSS 1.34%

Does this matter?

Lower severity and a low EPSS score (1.34%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS: 1.34% probability · 70th percentile
CISA KEV: Not listed
Weakness: CWE-115, CWE-436
Affected: xmldom project/xmldom · debian/debian linux
Source: security-advisories@github.com

References

https://github.com/xmldom/xmldom/commit/d4201b9dfbf760049f457f9f08a3888d48835135Patch
https://github.com/xmldom/xmldom/releases/tag/0.5.0Release Notes
https://github.com/xmldom/xmldom/security/advisories/GHSA-h6q6-9hqw-rwfvVendor Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00000.htmlMailing List, Third Party Advisory
https://www.npmjs.com/package/xmldomProduct
https://github.com/xmldom/xmldom/commit/d4201b9dfbf760049f457f9f08a3888d48835135Patch
https://github.com/xmldom/xmldom/releases/tag/0.5.0Release Notes
https://github.com/xmldom/xmldom/security/advisories/GHSA-h6q6-9hqw-rwfvVendor Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00000.htmlMailing List, Third Party Advisory
https://www.npmjs.com/package/xmldomProduct

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.