CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
Percentile
69.6%
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.
Update to 0.5.0 (once it is released)
Downstream applications can validate the input and reject the maliciously crafted documents.
Similar to this one reported on the Go standard library:
If you have any questions or comments about this advisory:
xmldom/xmldom
npm owner ls xmldom
github.com/advisories/GHSA-h6q6-9hqw-rwfv
github.com/xmldom/xmldom/commit/d4201b9dfbf760049f457f9f08a3888d48835135
github.com/xmldom/xmldom/releases/tag/0.5.0
github.com/xmldom/xmldom/security/advisories/GHSA-h6q6-9hqw-rwfv
lists.debian.org/debian-lts-announce/2023/01/msg00000.html
nvd.nist.gov/vuln/detail/CVE-2021-21366
www.npmjs.com/package/xmldom
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
Percentile
69.6%