CVE-2026-43506 · cross-distro fix matrix

CVE-2026-43506: An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.

Affects 4 Linux releases across 4 (distro × package) combinations. First disclosed: 2026-05-01.

CVSS v3:MEDIUM · 5.3(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-43506 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

prosody→ fixed in0.12.3-1+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y prosody
```

Debian trixie

Source: Debian Security Tracker

prosody→ fixed in13.0.1-1+deb131uurgency: not yet assigned
```
sudo apt-get install --only-upgrade -y prosody
```

Alpine v3.21

Source: Alpine secdb

prosody→ fixed in0.12.6-r0
```
apk update && apk add --upgrade prosody
```

Alpine edge

Source: Alpine secdb

prosody→ fixed in13.0.5-r0
```
apk update && apk add --upgrade prosody
```

Are YOU affected by CVE-2026-43506?

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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