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Fencer Vulns
high 7.5

CVE-2026-22860 json

Rack has a Directory Traversal via Rack:Directory

published 2026-02-17 8 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-7914 , GHSA-mxw3-3hh2-x2mh

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

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.

Patch / fix

  • rubygems rack 2.2.22, 3.1.20, 3.2.5
  • rack rack 2.2.22, 3.1.20, 3.2.5
  • rack_project rack 2.2.22, 3.1.20, 3.2.5
  • ruby-rack Debian 12 2.2.22-0+deb12u1
  • ruby-rack Debian 13 3.1.20-0+deb13u1
  • ruby-rack Debian 14 3.2.5-1

debian advisories DEBIAN-CVE-2026-22860

  • ruby-rack Ubuntu 24.04 LTS 2.2.7-1ubuntu0.6
  • ruby-rack Ubuntu 25.10 3.1.16-0.1ubuntu0.2
  • ruby-rack Ubuntu 26.10, Ubuntu 26.04 LTS 3.2.4-1ubuntu1
  • ruby-rack Ubuntu Pro 20.04 LTS 2.0.7-2ubuntu0.1+esm9
  • ruby-rack Ubuntu Pro 22.04 LTS 2.1.4-5ubuntu1.2+esm2

ubuntu advisories UBUNTU-CVE-2026-22860

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • rubygem-rack-2.2 openSUSE Tumbleweed 2.2.22-1.1

opensuse advisories openSUSE-SU-2026:10286-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-22860 updated cvss 7.5

rubygem-rack: Rack Directory Traversal via Rack:Directory

  • Red Hat 3scale API Management Platform 2 3scale-amp21/zync, 3scale-amp22/zync, 3scale-amp24/zync, 3scale-amp25/zync, 3scale-amp26/zync, 3scale-amp20/system, +19 more
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/vector-rhel9, openshift-logging/fluentd-rhel9, openshift-logging/eventrouter-rhel9, openshift-logging/logging-view-plugin-rhel9, openshift-logging/cluster-logging-rhel9-operator, openshift-logging/log-file-metric-exporter-rhel9, +1 more
    not affected: component not present
  • Red Hat Enterprise Linux 7 pcs, pcs-snmp, python-clufter Red Hat Enterprise Linux 8 pcs, pcs-snmp Red Hat Enterprise Linux 9 pcs, pcs-snmp Red Hat Enterprise Linux 10 pcs
    not affected: vulnerable code not in execute path

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/rack/rack/security/advisories/GHSA-mxw3-3hh2-x2mh referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
rubygems rack
<2.2.22
>=3.0.0.beta1, <3.1.20
>=3.2.0, <3.2.5
2.2.22
3.1.20
3.2.5

Affected products

  • rack rack
  • Red Hat Logging Subsystem for Red Hat OpenShift
  • Red Hat Red Hat 3scale API Management Platform 2
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory
  • CWE-548 Exposure of Information Through Directory Listing

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.