CVE-2026-40176 · cross-distro fix matrix

CVE-2026-40176: Composer is a dependency manager for PHP. Versions 1.0 through 2.2.26 and 2.3 through 2.9.5 contain a command injection vulnerability in the Perforce::generateP4Command() method, which constructs shell commands by interpolating user-supplied Perforce connection parameters (port, user, client) withou

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

Fix per ecosystem

Each block below is a distro release where CVE-2026-40176 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

composer→ fixed in2.5.5-1+deb12u4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y composer
```

Debian trixie

Source: Debian Security Tracker

composer→ fixed in2.8.8-1+deb13u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y composer
```

Alpine edge

Source: Alpine secdb

composer→ fixed in2.9.6-r0

apk update && apk add --upgrade composer

Are YOU affected by CVE-2026-40176?

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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