CVE-2025-54571 · cross-distro fix matrix

CVE-2025-54571: ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrated

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

Fix per ecosystem

Each block below is a distro release where CVE-2025-54571 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+deb11u5urgency: 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+deb12u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y modsecurity-apache
```

Debian trixie

Source: Debian Security Tracker

modsecurity-apache→ fixed in2.9.11-1+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y modsecurity-apache
```

Are YOU affected by CVE-2025-54571?

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

CVE-2025-54571dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. From $9/mo, 14-day free trial, cancel anytime.

See StackPatch (from $9/mo)