CVE-2020-4049 · cross-distro fix matrix

CVE-2020-4049: In affected versions of WordPress, when uploading themes, the name of the theme folder can be crafted in a way that could lead to JavaScript execution in /wp-admin on the themes page. This does require an admin to upload the theme, and is low severity self-XSS. This has been patched in version 5.4.2

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-4049 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

wordpress→ fixed in5.4.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wordpress
```

Debian bookworm

Source: Debian Security Tracker

wordpress→ fixed in5.4.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wordpress
```

Debian trixie

Source: Debian Security Tracker

wordpress→ fixed in5.4.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wordpress
```

Are YOU affected by CVE-2020-4049?

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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Continuous monitoring beats manual checking

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