CVE-2026-126310

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-126310", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-10T20:16:44.443Z", "datePublished": "2026-11-13T09:36:18.944Z", "dateUpdated": "2026-11-13T09:36:18.944Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-13T09:36:18.944Z"}, "datePublic": "2026-10-26T00:00:00.000Z", "title": "OpenBao before 2.6.5 and 2.7.2 OIDC Provider Authentication Bypass via Client Credentials", "descriptions": [{"lang": "en", "value": "OpenBao before 2.6.5 and 2.7.2 contains an authentication bypass vulnerability that allows unauthenticated callers to obtain OIDC ID tokens by abusing public clients with client_credentials enabled. Attackers who know a public client's client_id can request tokens from the identity/oidc/provider/<name>/token endpoint to impersonate the client without any secret."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Authentication", "cweId": "CWE-287", "type": "CWE"}]}], "affected": [{"vendor": "openbao", "product": "openbao", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/openbao/openbao/v2", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "2.6.5"}, {"version": "2.6.5", "status": "unaffected", "versionType": "semver"}, {"version": "2.7.0", "status": "affected", "versionType": "semver", "lessThan": "2.7.2"}, {"version": "2.7.2", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.6.5"}, {"vulnerable": true, "criteria": "cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.7.0", "versionEndExcluding": "2.7.2"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "baseScore": 7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/openbao/openbao/security/advisories/GHSA-q824-44ff-f5j5", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-q824-44ff-f5j5)"}, {"name": "VulnCheck Advisory: OpenBao before 2.6.5 and 2.7.2 OIDC Provider Authentication Bypass via Client Credentials", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/openbao-before-2.6.5-and-2.7.2-oidc-provider-authentication-bypass-via-client-credentials"}], "credits": [{"lang": "en", "value": "datosh", "type": "reporter"}, {"lang": "en", "value": "cipherboy", "type": "remediation developer"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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