CVE-2019-15237 · cross-distro fix matrix

CVE-2019-15237: It was discovered that Roundcube Webmail mishandled Punycode xn-- domain names.

Affects 7 Linux releases across 32 (distro × package) combinations. First disclosed: 2026-04-29.

Fix per ecosystem

Each block below is a distro release where CVE-2019-15237 has a known fix. Run the listed command on that distro to remediate.

Ubuntu bionic

Source: Ubuntu USN

roundcube→ fixed in1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube
```
roundcube-core→ fixed in1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-core
```
roundcube-mysql→ fixed in1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-mysql
```
roundcube-pgsql→ fixed in1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-pgsql
```
roundcube-plugins→ fixed in1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-plugins
```
roundcube-sqlite3→ fixed in1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-sqlite3
```

Ubuntu focal

Source: Ubuntu USN

roundcube→ fixed in1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube
```
roundcube-core→ fixed in1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-core
```
roundcube-mysql→ fixed in1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-mysql
```
roundcube-pgsql→ fixed in1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-pgsql
```
roundcube-plugins→ fixed in1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-plugins
```
roundcube-sqlite3→ fixed in1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-sqlite3
```

Ubuntu jammy

Source: Ubuntu USN

roundcube→ fixed in1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube
```
roundcube-core→ fixed in1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-core
```
roundcube-mysql→ fixed in1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-mysql
```
roundcube-pgsql→ fixed in1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-pgsql
```
roundcube-plugins→ fixed in1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-plugins
```
roundcube-sqlite3→ fixed in1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-sqlite3
```

Ubuntu noble

Source: Ubuntu USN

roundcube→ fixed in1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube
```
roundcube-core→ fixed in1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-core
```
roundcube-mysql→ fixed in1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-mysql
```
roundcube-pgsql→ fixed in1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-pgsql
```
roundcube-plugins→ fixed in1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-plugins
```
roundcube-sqlite3→ fixed in1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-sqlite3
```

Ubuntu xenial

Source: Ubuntu USN

roundcube→ fixed in1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube
```
roundcube-core→ fixed in1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-core
```
roundcube-mysql→ fixed in1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-mysql
```
roundcube-pgsql→ fixed in1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-pgsql
```
roundcube-plugins→ fixed in1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-plugins
```
roundcube-sqlite3→ fixed in1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1
```
sudo apt-get install --only-upgrade -y roundcube-sqlite3
```

Debian bookworm

Source: Debian Security Tracker

roundcube→ fixed in1.5.0+dfsg.1-1urgency: low

sudo apt-get install --only-upgrade -y roundcube

Debian trixie

Source: Debian Security Tracker

roundcube→ fixed in1.5.0+dfsg.1-1urgency: low

sudo apt-get install --only-upgrade -y roundcube

Are YOU affected by CVE-2019-15237?

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.

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