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Ruby CVE-2026-22860

HIGH
Path Traversal (CWE-22)
2026-02-18 security-advisories@github.com GHSA-mxw3-3hh2-x2mh
Ruby Rack Red Hat Suse
7.5
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SUSE
HIGH
qualitative
Red Hat
7.5 HIGH
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
PoC Detected
Feb 19, 2026 - 18:27 vuln.today
Public exploit code
Patch released
Feb 19, 2026 - 18:27 nvd
Patch available
CVE Published
Feb 18, 2026 - 19:21 nvd
HIGH 7.5

DescriptionGitHub Advisory

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.

AnalysisAI

Directory traversal in Rack versions prior to 2.2.22, 3.1.20, and 3.2.5 allows unauthenticated remote attackers to list directories outside the configured root by exploiting a string prefix matching flaw in path validation. An attacker can craft requests with path traversal sequences to enumerate sensitive directories if the target path shares a common prefix with the configured root directory. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malicious path with traversal sequence
Exploit
Submit request to Rack::Directory endpoint
Execution
Bypass string prefix validation
Impact
List directories outside configured root
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Vulnerability AssessmentAI

Exploitation Rack::Directory must be enabled serving static files. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.5 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to compromise the affected system.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all applications and systems using Rack versions prior to 2.2.22, 3.1.20, or 3.2.5. …

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Vendor StatusVendor

SUSE

Severity: High
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7 Fixed
SUSE Linux Enterprise High Availability Extension 15 SP7 Fixed
SUSE Linux Enterprise High Availability Extension 16.0 Fixed
SUSE Linux Enterprise High Availability Extension 16.1 Fixed

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CVE-2026-22860 vulnerability details – vuln.today
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