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vuln-cve/data/2026/54xxx/CVE-2026-54603.json
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{
"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": "2026-10-05T17:06:33.683Z"
},
"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"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/ruby-oauth/oauth2/security/advisories/GHSA-pp92-crg2-gfv9",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-07-29T13:51:29.506941Z",
"id": "CVE-2026-54603",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-07-29T13:52:49.325Z"
}
},
{
"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2026/10/msg00014.html"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2026-10-05T17:06:33.683Z"
}
}
]
}
}