CVE-2025-47905 · cross-distro fix matrix

CVE-2025-47905: Varnish Cache before 7.6.3 and 7.7 before 7.7.1, and Varnish Enterprise before 6.0.13r14, allow client-side desync via HTTP/1 requests, because the product incorrectly permits CRLF to be skipped to delimit chunk boundaries.

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

Fix per ecosystem

Each block below is a distro release where CVE-2025-47905 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

varnish→ fixed in6.5.1-1+deb11u5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y varnish
```

Debian bookworm

Source: Debian Security Tracker

varnish→ fixed in7.1.1-2+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y varnish
```

Debian trixie

Source: Debian Security Tracker

varnish→ fixed in7.7.0-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y varnish
```

Are YOU affected by CVE-2025-47905?

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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