{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54603", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-15T19:45:23.540Z", "datePublished": "2026-07-28T16:29:03.566Z", "dateUpdated": "2026-07-28T16:29:03.566Z"}, "containers": {"cna": {"title": "OAuth2::Client#request: Protocol-relative redirect Location overrides authority, leaking bearer Authorization to attacker host", "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-601", "lang": "en", "description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/ruby-oauth/oauth2/security/advisories/GHSA-pp92-crg2-gfv9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ruby-oauth/oauth2/security/advisories/GHSA-pp92-crg2-gfv9"}, {"name": "https://github.com/ruby-oauth/oauth2/commit/0f0a474f1b38453e119e660c2daca742d4378ce9", "tags": ["x_refsource_MISC"], "url": "https://github.com/ruby-oauth/oauth2/commit/0f0a474f1b38453e119e660c2daca742d4378ce9"}, {"name": "https://github.com/ruby-oauth/oauth2/releases/tag/v2.0.22", "tags": ["x_refsource_MISC"], "url": "https://github.com/ruby-oauth/oauth2/releases/tag/v2.0.22"}], "affected": [{"vendor": "ruby-oauth", "product": "oauth2", "versions": [{"version": ">= 0.4.0, < 2.0.22", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-28T16:29:03.566Z"}, "descriptions": [{"lang": "en", "value": "OAuth2 is a Ruby wrapper for the OAuth 2.0 and 2.1 authorization frameworks, including OpenID Connect (OIDC). From 0.4.0 to 2.0.21, a protocol-relative redirect Location returned to OAuth2::Client#request overrides the request authority, so the bearer Authorization header is sent to an attacker-controlled host, leaking the credential. This issue is fixed in version 2.0.22."}], "source": {"advisory": "GHSA-pp92-crg2-gfv9", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.4.0,2.0.22)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "oauth2", "source": "cna", "vendor": "ruby-oauth"}, "product": "oauth2", "vendor": "ruby-oauth"}], "created": "2026-07-28T20:34:02.421860+00:00", "updated": "2026-07-28T20:34:02.421909+00:00", "vendors": ["ruby-oauth", "ruby-oauth$PRODUCT$oauth2"]}