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Rack CVE-2026-22860

HIGH
Path Traversal (CWE-22)
2026-02-18 security-advisories@github.com GHSA-mxw3-3hh2-x2mh
7.5
CVSS 3.1 · Vendor: github
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Severity by source

Vendor (github) 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 Vendor (github).

CVSS VectorVendor: github

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

DescriptionCVE.org

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. Public exploit code exists for this vulnerability.

Technical ContextAI

Classified as CWE-22 (Path Traversal). Affects Rack. 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.

RemediationAI

A vendor patch is available — apply it immediately. Validate and sanitize file path inputs. Use allowlists. Restrict network access to the affected service where possible.

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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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