CVE-2021-41773 · cross-distro fix matrix

CVE-2021-41773: A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configura

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-41773 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

apache2→ fixed in2.4.50-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y apache2
```

Debian trixie

Source: Debian Security Tracker

apache2→ fixed in2.4.50-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y apache2
```

Alpine v3.20

Source: Alpine secdb

apache2→ fixed in2.4.50-r0
```
apk update && apk add --upgrade apache2
```

Alpine v3.21

Source: Alpine secdb

apache2→ fixed in2.4.50-r0
```
apk update && apk add --upgrade apache2
```

Alpine edge

Source: Alpine secdb

apache2→ fixed in2.4.50-r0
```
apk update && apk add --upgrade apache2
```

Alpine v3.18

Source: Alpine secdb

apache2→ fixed in2.4.50-r0
```
apk update && apk add --upgrade apache2
```

Alpine v3.19

Source: Alpine secdb

apache2→ fixed in2.4.50-r0
```
apk update && apk add --upgrade apache2
```

Are YOU affected by CVE-2021-41773?

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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