CVE-2021-26272 · cross-distro fix matrix

CVE-2021-26272: It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted URL-like text into the editor, and then press Enter or Space (in the Autolink plugin).

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-26272 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-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ckeditor
```

Debian bookworm

Source: Debian Security Tracker

ckeditor→ fixed in4.16.0+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ckeditor
```

Are YOU affected by CVE-2021-26272?

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

CVE-2021-26272dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)