CVE-2021-31684 · cross-distro fix matrix

CVE-2021-31684: A vulnerability was discovered in the indexOf function of JSONParserByteArray in JSON Smart versions 1.3 and 2.4 which causes a denial of service (DOS) via a crafted web request.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-31684 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

json-smart→ fixed in2.2-2+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y json-smart
```

Debian bookworm

Source: Debian Security Tracker

json-smart→ fixed in2.2-2+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y json-smart
```

Debian trixie

Source: Debian Security Tracker

json-smart→ fixed in2.5.1-1urgency: unimportant

sudo apt-get install --only-upgrade -y json-smart

Are YOU affected by CVE-2021-31684?

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

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