CVE-2021-22904 · cross-distro fix matrix

CVE-2021-22904: The actionpack ruby gem before 6.1.3.2, 6.0.3.7, 5.2.4.6, 5.2.6 suffers from a possible denial of service vulnerability in the Token Authentication logic in Action Controller due to a too permissive regular expression. Impacted code uses `authenticate_or_request_with_http_token` or `authenticate_wit

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-22904 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

rails→ fixed in2:6.0.3.7+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rails
```

Debian bookworm

Source: Debian Security Tracker

rails→ fixed in2:6.0.3.7+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rails
```

Debian trixie

Source: Debian Security Tracker

rails→ fixed in2:6.0.3.7+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rails
```

Are YOU affected by CVE-2021-22904?

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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