CVE-2026-54605: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in ruby-oauth oauth
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.
AI Analysis
Technical Summary
The ruby-oauth oauth library versions 0.5.5 to 1.1.5 contain a vulnerability (CVE-2026-54605) where the OAuth::Consumer#token_request method processes 300 to 399 HTTP redirects by recursively following the Location header. This behavior can cause the consumer's configuration to be altered and expose signed OAuth request metadata, including the Authorization header, to a cross-origin host. This exposure constitutes an information disclosure vulnerability classified under CWE-200. The issue is resolved in version 1.1.6.
Potential Impact
An attacker controlling or intercepting a redirect response can cause the client to leak sensitive OAuth request metadata, including the Authorization header, to an unauthorized cross-origin host. This can lead to partial compromise of confidentiality and integrity of OAuth requests. The CVSS v3.1 base score is 7.2 (high), reflecting network attack vector, low attack complexity, no privileges or user interaction required, scope change, and partial confidentiality and integrity impact.
Mitigation Recommendations
Upgrade ruby-oauth oauth library to version 1.1.6 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are indicated. Patch status is confirmed by the vendor advisory stating the fix is in 1.1.6.
CVE-2026-54605: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in ruby-oauth oauth
Description
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.
CVSS v3.1
Score 7.2high
Affected software
ruby-oauth
oauth
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The ruby-oauth oauth library versions 0.5.5 to 1.1.5 contain a vulnerability (CVE-2026-54605) where the OAuth::Consumer#token_request method processes 300 to 399 HTTP redirects by recursively following the Location header. This behavior can cause the consumer's configuration to be altered and expose signed OAuth request metadata, including the Authorization header, to a cross-origin host. This exposure constitutes an information disclosure vulnerability classified under CWE-200. The issue is resolved in version 1.1.6.
Potential Impact
An attacker controlling or intercepting a redirect response can cause the client to leak sensitive OAuth request metadata, including the Authorization header, to an unauthorized cross-origin host. This can lead to partial compromise of confidentiality and integrity of OAuth requests. The CVSS v3.1 base score is 7.2 (high), reflecting network attack vector, low attack complexity, no privileges or user interaction required, scope change, and partial confidentiality and integrity impact.
Mitigation Recommendations
Upgrade ruby-oauth oauth library to version 1.1.6 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are indicated. Patch status is confirmed by the vendor advisory stating the fix is in 1.1.6.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-15T19:45:23.540Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a68de669c2644c7f8e9c1a6
Added to database: 07/28/2026, 16:52:54 UTC
Last enriched: 07/29/2026, 16:08:17 UTC
Last updated: 09/12/2026, 22:01:34 UTC
Views: 73
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