CVE-2026-32874 · cross-distro fix matrix

CVE-2026-32874: Cameron Criswell discovered that UltraJSON contained a memory leak

Affects 5 Linux releases across 9 (distro × package) combinations. First disclosed: 2026-04-28.

Fix per ecosystem

Each block below is a distro release where CVE-2026-32874 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

ujson→ fixed in5.1.0-1ubuntu0.1~esm2USN-8219-1
```
sudo apt-get install --only-upgrade -y ujson
```
python3-ujson→ fixed in5.1.0-1ubuntu0.1~esm2USN-8219-1
```
sudo apt-get install --only-upgrade -y python3-ujson
```

Ubuntu noble

Source: Ubuntu USN

ujson→ fixed in5.9.0-1ubuntu0.1~esm1USN-8219-1
```
sudo apt-get install --only-upgrade -y ujson
```
python3-ujson→ fixed in5.9.0-1ubuntu0.1~esm1USN-8219-1
```
sudo apt-get install --only-upgrade -y python3-ujson
```

Ubuntu questing

Source: Ubuntu USN

ujson→ fixed in5.10.0-1ubuntu0.1USN-8219-1

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

python3-ujson→ fixed in5.10.0-1ubuntu0.1USN-8219-1

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

Ubuntu resolute

Source: Ubuntu USN

ujson→ fixed in5.11.0-3ubuntu0.1USN-8219-1

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

python3-ujson→ fixed in5.11.0-3ubuntu0.1USN-8219-1

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

Alpine edge

Source: Alpine secdb

py3-ujson→ fixed in5.12.0-r0

apk update && apk add --upgrade py3-ujson

Are YOU affected by CVE-2026-32874?

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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