CVE-2021-33829 · cross-distro fix matrix

CVE-2021-33829: A cross-site scripting (XSS) vulnerability in the HTML Data Processor in CKEditor 4 4.14.0 through 4.16.x before 4.16.1 allows remote attackers to inject executable JavaScript code through a crafted comment because --!> is mishandled.

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-33829 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

ckeditor→ fixed in4.16.0+dfsg-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ckeditor
```

Debian bookworm

Source: Debian Security Tracker

ckeditor→ fixed in4.16.0+dfsg-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ckeditor
```

Are YOU affected by CVE-2021-33829?

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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