OAuth: Cross-origin token-request redirects can expose signed request metadata

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-54605
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-28 17:16:52 UTC
Updated2026-07-28 18:17:22 UTC
DescriptionOAuth is a Ruby wrapper for the OAuth 1.0 and 1.0a protocols, providing clients and servers. From 0.5.5 to 1.1.5, OAuth::Consumer#token_request parses the raw Location header of a 300 to 399 redirect returned by the OAuth server and follows the redirect recursively, which can mutate the consumer's configuration and expose signed OAuth request metadata, including the Authorization header, to a cross-origin host. This issue is fixed in version 1.1.6.

Risk And Classification

Primary CVSS: v3.1 7.2 HIGH from [email protected]

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

EPSS: 0.001320000 probability, percentile 0.031580000 (date 2026-07-29)

Problem Types: CWE-200 | CWE-346 | CWE-918 | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor | CWE-346 CWE-346: Origin Validation Error | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ruby-oauth Oauth affected >= 0.5.5, < 1.1.6 Not specified

References

ReferenceSourceLinkTags
github.com/ruby-oauth/oauth/releases/tag/v1.1.6 [email protected] github.com
github.com/ruby-oauth/oauth/security/advisories/GHSA-prq8-7wvh-44qh 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/ruby-oauth/oauth/commit/d069dc8c4c9631947451215f07460d6cdf0caf3f [email protected] github.com
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