CVE-2026-54605
HIGHOAuth: Cross-origin token-request redirects can expose signed request metadata
Title source: cnaDescription
OAuth 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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/ruby-oauth/oauth/security/advisories/GHSA-prq8-7wvh-44qh
X_Refsource_Misc x_refsource_misc
https://github.com/ruby-oauth/oauth/commit/d069dc8c4c9631947451215f07460d6cdf0caf3f
X_Refsource_Misc x_refsource_misc
https://github.com/ruby-oauth/oauth/releases/tag/v1.1.6
Scores
CVSS v3
7.2
EPSS
0.0013
EPSS Percentile
3.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-200
CWE-346
CWE-918
Status
published
Products (2)
ruby-oauth/oauth
>= 0.5.5, < 1.1.6
rubygems/oauth
0.5.5 - 1.1.6RubyGems
Published
Jul 28, 2026
Tracked Since
Jul 28, 2026