CVE-2021-22923 · cross-distro fix matrix

CVE-2021-22923: When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary

Affects 7 Linux releases across 7 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-22923 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

curl→ fixed in7.79.1-1urgency: unimportant

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

Debian trixie

Source: Debian Security Tracker

curl→ fixed in7.79.1-1urgency: unimportant

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

Alpine v3.20

Source: Alpine secdb

curl→ fixed in7.78.0-r0
```
apk update && apk add --upgrade curl
```

Alpine v3.21

Source: Alpine secdb

curl→ fixed in7.78.0-r0
```
apk update && apk add --upgrade curl
```

Alpine edge

Source: Alpine secdb

curl→ fixed in7.78.0-r0
```
apk update && apk add --upgrade curl
```

Alpine v3.18

Source: Alpine secdb

curl→ fixed in7.78.0-r0
```
apk update && apk add --upgrade curl
```

Alpine v3.19

Source: Alpine secdb

curl→ fixed in7.78.0-r0
```
apk update && apk add --upgrade curl
```

Are YOU affected by CVE-2021-22923?

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

CVE-2021-22923dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

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