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CVE-2021-21289 · cross-distro fix matrix

CVE-2021-21289: Mechanize is an open-source ruby library that makes automated web interaction easy. In Mechanize from version 2.0.0 and before version 2.7.7 there is a command injection vulnerability. Affected versions of mechanize allow for OS commands to be injected using several classes' methods which implicitly

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-21289 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • ruby-mechanize→ fixed in2.7.7-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y ruby-mechanize

Debian bookworm

Source: Debian Security Tracker

  • ruby-mechanize→ fixed in2.7.7-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y ruby-mechanize

Debian trixie

Source: Debian Security Tracker

  • ruby-mechanize→ fixed in2.7.7-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y ruby-mechanize
Are YOU affected by CVE-2021-21289?

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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CVE-2021-21289dropped 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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