CVE-2020-5249 · cross-distro fix matrix

CVE-2020-5249: In Puma (RubyGem) before 4.3.3 and 3.12.4, if an application using Puma allows untrusted input in an early-hints header, an attacker can use a carriage return character to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-5249 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

puma→ fixed in3.12.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y puma
```

Debian bookworm

Source: Debian Security Tracker

puma→ fixed in3.12.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y puma
```

Debian trixie

Source: Debian Security Tracker

puma→ fixed in3.12.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y puma
```

Are YOU affected by CVE-2020-5249?

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

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