CVE-2021-21241 · cross-distro fix matrix

CVE-2021-21241: The Python "Flask-Security-Too" package is used for adding security features to your Flask application. It is an is a independently maintained version of Flask-Security based on the 3.0.0 version of Flask-Security. In Flask-Security-Too from version 3.3.0 and before version 3.4.5, the /login and /ch

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-21241 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

flask-security→ fixed in4.0.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y flask-security
```

Debian bookworm

Source: Debian Security Tracker

flask-security→ fixed in4.0.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y flask-security
```

Debian trixie

Source: Debian Security Tracker

flask-security→ fixed in4.0.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y flask-security
```

Are YOU affected by CVE-2021-21241?

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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