CVE-2026-42944 · cross-distro fix matrix

CVE-2026-42944: Andrew Griffiths discovered that Unbound did not properly handle certain

Affects 6 Linux releases across 26 (distro × package) combinations. First disclosed: 2026-05-20.

CVSS v3:HIGH · 7.5(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-42944 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

unbound→ fixed in1.13.1-1ubuntu5.15USN-8282-1
```
sudo apt-get install --only-upgrade -y unbound
```
libunbound-dev→ fixed in1.13.1-1ubuntu5.15USN-8282-1
```
sudo apt-get install --only-upgrade -y libunbound-dev
```
libunbound8→ fixed in1.13.1-1ubuntu5.15USN-8282-1
```
sudo apt-get install --only-upgrade -y libunbound8
```
python3-unbound→ fixed in1.13.1-1ubuntu5.15USN-8282-1
```
sudo apt-get install --only-upgrade -y python3-unbound
```
unbound-anchor→ fixed in1.13.1-1ubuntu5.15USN-8282-1
```
sudo apt-get install --only-upgrade -y unbound-anchor
```
unbound-host→ fixed in1.13.1-1ubuntu5.15USN-8282-1
```
sudo apt-get install --only-upgrade -y unbound-host
```

Ubuntu noble

Source: Ubuntu USN

unbound→ fixed in1.19.2-1ubuntu3.8USN-8282-1

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

libunbound-dev→ fixed in1.19.2-1ubuntu3.8USN-8282-1

sudo apt-get install --only-upgrade -y libunbound-dev

libunbound8→ fixed in1.19.2-1ubuntu3.8USN-8282-1

sudo apt-get install --only-upgrade -y libunbound8

python3-unbound→ fixed in1.19.2-1ubuntu3.8USN-8282-1

sudo apt-get install --only-upgrade -y python3-unbound

unbound-anchor→ fixed in1.19.2-1ubuntu3.8USN-8282-1

sudo apt-get install --only-upgrade -y unbound-anchor

unbound-host→ fixed in1.19.2-1ubuntu3.8USN-8282-1

sudo apt-get install --only-upgrade -y unbound-host

Ubuntu questing

Source: Ubuntu USN

unbound→ fixed in1.22.0-2ubuntu2.3USN-8282-1

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

libunbound-dev→ fixed in1.22.0-2ubuntu2.3USN-8282-1

sudo apt-get install --only-upgrade -y libunbound-dev

libunbound8→ fixed in1.22.0-2ubuntu2.3USN-8282-1

sudo apt-get install --only-upgrade -y libunbound8

python3-unbound→ fixed in1.22.0-2ubuntu2.3USN-8282-1

sudo apt-get install --only-upgrade -y python3-unbound

unbound-anchor→ fixed in1.22.0-2ubuntu2.3USN-8282-1

sudo apt-get install --only-upgrade -y unbound-anchor

unbound-host→ fixed in1.22.0-2ubuntu2.3USN-8282-1

sudo apt-get install --only-upgrade -y unbound-host

Ubuntu resolute

Source: Ubuntu USN

unbound→ fixed in1.24.2-1ubuntu2.1USN-8282-1

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

libunbound-dev→ fixed in1.24.2-1ubuntu2.1USN-8282-1

sudo apt-get install --only-upgrade -y libunbound-dev

libunbound8→ fixed in1.24.2-1ubuntu2.1USN-8282-1

sudo apt-get install --only-upgrade -y libunbound8

python3-unbound→ fixed in1.24.2-1ubuntu2.1USN-8282-1

sudo apt-get install --only-upgrade -y python3-unbound

unbound-anchor→ fixed in1.24.2-1ubuntu2.1USN-8282-1

sudo apt-get install --only-upgrade -y unbound-anchor

unbound-host→ fixed in1.24.2-1ubuntu2.1USN-8282-1

sudo apt-get install --only-upgrade -y unbound-host

Debian trixie

Source: Debian Security Tracker

unbound→ fixed in1.22.0-2+deb13u3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y unbound
```

Alpine edge

Source: Alpine secdb

unbound→ fixed in1.25.1-r0
```
apk update && apk add --upgrade unbound
```

Are YOU affected by CVE-2026-42944?

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

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Continuous monitoring beats manual checking

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