CVE-2021-21366 · cross-distro fix matrix

CVE-2021-21366: 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 unexpecte

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-21366 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

node-xmldom→ fixed in0.5.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y node-xmldom
```

Debian bookworm

Source: Debian Security Tracker

node-xmldom→ fixed in0.5.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y node-xmldom
```

Debian trixie

Source: Debian Security Tracker

node-xmldom→ fixed in0.5.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y node-xmldom
```

Are YOU affected by CVE-2021-21366?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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