CVE-2026-22860
ruby-rack - security update
7.5
HIGH
CVSS 3.1
EPSS 0.12%
Description
Rack is a modular Ruby web server interface. Prior to versions 2.2.22, 3.1.20, and 3.2.5, `Rack::Directory`’s path check used a string prefix match on the expanded path. A request like `/../root_example/` can escape the configured root if the target path starts with the root string, allowing directory listing outside the intended root. Versions 2.2.22, 3.1.20, and 3.2.5 fix the issue.
How to fix CVE-2026-22860
To remediate CVE-2026-22860, upgrade the affected package to a fixed version below.
- —upgrade to 2.1.4-3+deb11u5 or later
- —upgrade to 2.1.4-3+deb11u5 or later
- —upgrade to 2.2.22-0+deb12u1 or later
- —upgrade to 2.2.22 or later
Is CVE-2026-22860 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 2.1.4-3+deb11u5
- from 0, < 2.1.4-3+deb11u5
- from 0, < 2.2.22-0+deb12u1
- from 0, < 2.2.22
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |