CVE-2025-27220 · cross-distro fix matrix

CVE-2025-27220: In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-27220 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

ruby2.7→ fixed in2.7.4-1+deb11u5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ruby2.7
```

Debian trixie

Source: Debian Security Tracker

ruby3.3→ fixed in3.3.7-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ruby3.3
```

Are YOU affected by CVE-2025-27220?

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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