A flaw was found in Quarkus OIDC. A shared token-introspection cache can be exploited by a remote attacker to bypass authentication across different tenants. This allows unauthorized access to resources or data, leading to a cross-tenant authentication bypass.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://nvd.nist.gov/vuln/detail/CVE-2026-19625 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-19625 cve-icon
History

Tue, 01 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in Quarkus OIDC. A shared token-introspection cache can be exploited by a remote attacker to bypass authentication across different tenants. This allows unauthorized access to resources or data, leading to a cross-tenant authentication bypass.
Title quarkus-oidc: Quarkus OIDC: Cross-tenant authentication bypass via shared token-introspection cache
Weaknesses CWE-524
References
Metrics threat_severity

None

 cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N'}

threat_severity

Important

Projects

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cve-icon MITRE

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cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

Severity : Important

Publid Date: 2026-08-31T11:55:20Z

Links: CVE-2026-19625 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-01T13:45:05Z

Weaknesses