CVE-2026-48843 · cross-distro fix matrix

CVE-2026-48843: Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16,and 1.7.x before 1.7.1 has Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure,

Affects 3 Linux releases across 3 (distro × package) combinations. First disclosed: 2026-05-25.

CVSS v3:HIGH · 7.2(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-48843 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

roundcube→ fixed in1.4.15+dfsg.1-1+deb11u9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y roundcube
```

Debian bookworm

Source: Debian Security Tracker

roundcube→ fixed in1.6.5+dfsg-1+deb12u9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y roundcube
```

Debian trixie

Source: Debian Security Tracker

roundcube→ fixed in1.6.16+dfsg-0+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y roundcube
```

Are YOU affected by CVE-2026-48843?

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-2026-48843dropped 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. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)