CVE-2021-27927 · cross-distro fix matrix

CVE-2021-27927: In Zabbix from 4.0.x before 4.0.28rc1, 5.0.0alpha1 before 5.0.10rc1, 5.2.x before 5.2.6rc1, and 5.4.0alpha1 before 5.4.0beta2, the CControllerAuthenticationUpdate controller lacks a CSRF protection mechanism. The code inside this controller calls diableSIDValidation inside the init() method. An atta

Affects 8 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-27927 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

zabbix→ fixed in1:5.0.8+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y zabbix
```

Debian bookworm

Source: Debian Security Tracker

zabbix→ fixed in1:5.0.8+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y zabbix
```

Debian trixie

Source: Debian Security Tracker

zabbix→ fixed in1:5.0.8+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y zabbix
```

Alpine v3.20

Source: Alpine secdb

zabbix→ fixed in5.2.6-r0
```
apk update && apk add --upgrade zabbix
```

Alpine v3.21

Source: Alpine secdb

zabbix→ fixed in5.2.6-r0
```
apk update && apk add --upgrade zabbix
```

Alpine edge

Source: Alpine secdb

zabbix→ fixed in5.2.6-r0
```
apk update && apk add --upgrade zabbix
```

Alpine v3.18

Source: Alpine secdb

zabbix→ fixed in5.2.6-r0
```
apk update && apk add --upgrade zabbix
```

Alpine v3.19

Source: Alpine secdb

zabbix→ fixed in5.2.6-r0
```
apk update && apk add --upgrade zabbix
```

Are YOU affected by CVE-2021-27927?

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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