Addressable URI normalization resolves some dotted path segments to the wrong path

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-126354
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-12 22:19:20 UTC
Updated2026-11-12 22:19:20 UTC
DescriptionAddressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. From 2.2.5 until 2.9.1, Addressable::URI.normalize_path can resolve a path containing leading parent segments and later parent segments to a different path than an RFC 3986 resolver. URI#normalize, URI#join, URI#==, and URI#=== inherit the result. An application that authorizes the Addressable-normalized path but sends the original URI to another resolver can allow access outside the intended path allowlist. Applications that use the same normalized value for authorization and the request, or reject parent segments, are unaffected. This issue is fixed in version 2.9.1.

Risk And Classification

Primary CVSS: v3.1 4.8 MEDIUM from [email protected]

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

Problem Types: CWE-22 | CWE-436 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory | CWE-436 CWE-436: Interpretation Conflict

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
3.1CNADECLARED4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Sporkmonger Addressable affected >= 2.2.5, < 2.9.1 Not specified

References

ReferenceSourceLinkTags
github.com/sporkmonger/addressable/releases/tag/addressable-2.9.1 [email protected] github.com
github.com/sporkmonger/addressable/security/advisories/GHSA-8gmh-2hhj-2hv9 [email protected] github.com
github.com/sporkmonger/addressable/commit/25c7c412a2f7e06c3cac92872e831f... [email protected] github.com
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