CVE & CISA-KEV Catalog

CVE-2026-22860

HIGH
7.5
CVSS v3
NVD

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.

CWE-22Path TraversalCWE-548

How to fix

Remediation Available
ruby-rackDebian
Fixed in:2.1.4-3+deb11u5CVE-2026-22860
Fixed in:2.2.22-0+deb12u1CVE-2026-22860
Fixed in:3.1.20-0+deb13u1CVE-2026-22860
Fixed in:3.2.5-1CVE-2026-22860
ruby-rackUbuntu
Fixed in:2.0.7-2ubuntu0.1+esm9USN-8066-1
Fixed in:2.1.4-5ubuntu1.2+esm2USN-8066-1
Fixed in:2.2.7-1ubuntu0.6USN-8066-1
Fixed in:3.1.16-0.1ubuntu0.2USN-8066-1

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.66%probability of exploitation in 30 days
48thpercentile

Moderate risk: more likely to be exploited than 48% of all known CVEs.

References

Exploit1

Related Vulnerabilities

Other CWE-22 (Path Traversal) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-23897Critical9.8100%KEV + RansomFix
CVE-2023-32315High8.6100%KEVFix
CVE-2022-29464Critical9.8100%KEV + Ransom-
CVE-2021-26086Medium5.3100%KEVFix
CVE-2021-22005Critical9.8100%KEV + RansomFix
CVE-2020-5902Critical9.8100%KEV + RansomFix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.