CVE-2025-48866 · cross-distro fix matrix

CVE-2025-48866: ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The `sanitiseArg` (and `sanitizeArg` - this is the same action but an alias

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

Fix per ecosystem

Each block below is a distro release where CVE-2025-48866 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

modsecurity-apache→ fixed in2.9.3-3+deb11u4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y modsecurity-apache
```

Debian bookworm

Source: Debian Security Tracker

modsecurity-apache→ fixed in2.9.7-1+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y modsecurity-apache
```

Debian trixie

Source: Debian Security Tracker

modsecurity-apache→ fixed in2.9.10-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y modsecurity-apache
```

Are YOU affected by CVE-2025-48866?

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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