CVE-2026-19625: CWE-284 Improper Access Control in IBM Enterprise Build of Quarkus
Description
When a Quarkus application has multiple endpoints secured by individual OIDC provider tenants, such as "/oidc-provider1" that is secured by the OIDC Provider 1 and "/oidc-provider2" that is secured by the OIDC Provider 2, and an optional token introspection cache is also enabled, then a valid token issued by the OIDC Provider 1 that can be used to access "/oidc-provider1" can also be used to access "/oidc-provider2" that is secured by another OIDC Provider 2.
CVSS v3.1
Score 5.3medium
Affected software
IBM
Enterprise Build of Quarkus
cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.1:*:*:*:*:*:*:*cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.5:*:*:*:*:*:*:*cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.1:*:*:*:*:*:*:*cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.3:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects IBM Enterprise Build of Quarkus versions 3.27.1 through 3.27.5 and 3.33.1 through 3.33.3. When multiple endpoints are secured by distinct OIDC providers and token introspection caching is enabled, a token valid for one provider's endpoint can be incorrectly accepted by another provider's endpoint. This results from improper access control (CWE-284) in the token validation logic, allowing cross-tenant token reuse.
Potential Impact
The vulnerability allows an attacker possessing a valid token from one OIDC provider to access endpoints secured by a different OIDC provider within the same application. This can lead to unauthorized access to resources intended to be isolated per OIDC tenant. The CVSS score is 5.3 (medium), indicating limited confidentiality impact and no integrity or availability impact.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, consider disabling token introspection caching or segregating OIDC provider endpoints to prevent token reuse across tenants.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-12T15:04:25.674Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa07237acd9273b4931f749
Added to database: 09/08/2026, 20:38:15 UTC
Last enriched: 09/16/2026, 01:43:47 UTC
Last updated: 10/23/2026, 15:10:11 UTC
Views: 69
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