CVE-2023-40225 · cross-distro fix matrix

CVE-2023-40225: HAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15, 2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty Content-Length headers, violating RFC 9110 section 8.6. In uncommon cases, an HTTP/1 server behind HAProxy may interpret t

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

Fix per ecosystem

Each block below is a distro release where CVE-2023-40225 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

haproxy→ fixed in2.2.9-2+deb11u6urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y haproxy
```

Debian bookworm

Source: Debian Security Tracker

haproxy→ fixed in2.6.12-1+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y haproxy
```

Debian trixie

Source: Debian Security Tracker

haproxy→ fixed in2.6.15-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y haproxy
```

Are YOU affected by CVE-2023-40225?

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

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Continuous monitoring beats manual checking

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