CVE-2021-21366 affects xmldom versions 0.4.0 and older, a JavaScript XML DOM parser, and related Debian products. The vulnerability allows for unexpected syntactic changes during XML processing due to improper preservation of system identifiers, FPIs, or namespaces when repeatedly parsing and serializing maliciously crafted documents. Rated Medium (CVSS 4.3), this vulnerability requires user interaction (UI:R) and could lead to low impact on integrity (I:L), but does not affect confidentiality or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.5.0CPE matchmatch criteria | cpe:2.3:a:xmldom_project:xmldom:*:*:*:*:*:node.js:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.