CVE-2026-48998 · cross-distro fix matrix

CVE-2026-48998: guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Versions prior to 2.10.2 contain improper Host header validation when parsing raw HTTP request messages and when deriving a serve

Affects 2 Linux releases across 2 (distro × package) combinations. First disclosed: 2026-06-11.

CVSS v3:MEDIUM · 5.3(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-48998 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

php-guzzlehttp-psr7→ fixed in2.4.5-1+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php-guzzlehttp-psr7
```

Debian trixie

Source: Debian Security Tracker

php-guzzlehttp-psr7→ fixed in2.7.1-1+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php-guzzlehttp-psr7
```

Are YOU affected by CVE-2026-48998?

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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