CVE-2026-6732 · cross-distro fix matrix

CVE-2026-6732: It was discovered that libxml2 did not properly release memory allocated in

Affects 4 Linux releases across 16 (distro × package) combinations. First disclosed: 2026-04-23.

CVSS v3:MEDIUM · 6.5(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-6732 has a known fix. Run the listed command on that distro to remediate.

Ubuntu questing

Source: Ubuntu USN

libxml2→ fixed in2.14.5+dfsg-0.2ubuntu0.2USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2
```
libxml2-16→ fixed in2.14.5+dfsg-0.2ubuntu0.2USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-16
```
libxml2-dev→ fixed in2.14.5+dfsg-0.2ubuntu0.2USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-dev
```
libxml2-doc→ fixed in2.14.5+dfsg-0.2ubuntu0.2USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-doc
```
libxml2-utils→ fixed in2.14.5+dfsg-0.2ubuntu0.2USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-utils
```
python3-libxml2→ fixed in2.14.5+dfsg-0.2ubuntu0.2USN-8460-1
```
sudo apt-get install --only-upgrade -y python3-libxml2
```

Ubuntu resolute

Source: Ubuntu USN

libxml2→ fixed in2.15.2+dfsg-0.1ubuntu0.1USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2
```
libxml2-16→ fixed in2.15.2+dfsg-0.1ubuntu0.1USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-16
```
libxml2-dev→ fixed in2.15.2+dfsg-0.1ubuntu0.1USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-dev
```
libxml2-doc→ fixed in2.15.2+dfsg-0.1ubuntu0.1USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-doc
```
libxml2-source→ fixed in2.15.2+dfsg-0.1ubuntu0.1USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-source
```
libxml2-utils→ fixed in2.15.2+dfsg-0.1ubuntu0.1USN-8460-1
```
sudo apt-get install --only-upgrade -y libxml2-utils
```
python3-libxml2→ fixed in2.15.2+dfsg-0.1ubuntu0.1USN-8460-1
```
sudo apt-get install --only-upgrade -y python3-libxml2
```

Alpine v3.21

Source: Alpine secdb

libxml2→ fixed in2.13.9-r1
```
apk update && apk add --upgrade libxml2
```

Alpine edge

Source: Alpine secdb

libxml2→ fixed in2.13.9-r2
```
apk update && apk add --upgrade libxml2
```

qt6-qtwebengine→ fixed in6.11.0-r9

apk update && apk add --upgrade qt6-qtwebengine

Are YOU affected by CVE-2026-6732?

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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