CVE-2026-19625
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
When a Quarkus application has multiple endpoints secured by individual OIDC provider tenants, and an optional token introspection cache is enabled, a valid token issued by one OIDC provider can also be used to access an endpoint secured by another OIDC provider.
Risk Assessment
Risk of unauthorized access to resources protected by different identity providers, potentially leading to tenant isolation breach and data leakage.
Recommendation
Update Quarkus to a patched version and disable token introspection cache if not essential, or configure it to isolate tenants.
Other vulnerabilities in Quarkus
See all- CVE-2026-87743High
A flaw was found in Quarkus HTTP security. An unauthenticated attacker can exploit a discrepancy in how paths are normalized between the security matcher and HTTP request dispatchers. This allows the attacker to craft a URL that the security matcher considers public, but which is then routed to a protected endpoint, leading to an authorization bypass and potential unauthorized access to sensitive information.
- CVE-2026-50559High
A vulnerability in Quarkus allows bypassing HTTP path-based authorization policies using encoded semicolons (%3B) and slashes (%2F or %5C).
- CVE-2026-39852High
Quarkus before versions 3.20.6.1, 3.27.3.1, 3.33.1.1, 3.35.1.1, 3.34.7, and 3.35.2 has a path normalization inconsistency between the security layer and routing. An attacker can bypass authorization policies by appending a semicolon and arbitrary text to the URL (e.g., /api/admin;anything).
- CVE-2024-1726Medium
A flaw in the RESTEasy Reactive implementation in Quarkus causes security checks for some JAX-RS endpoints to be performed after serialization, consuming more processing resources during HTTP request checks. In certain configurations, an attacker knowing POST, PUT, or PATCH request paths can potentially overload vulnerable endpoints, leading to denial of service.
- CVE-2024-1979Low
A vulnerability was found in Quarkus. In certain conditions related to the CI process, git credentials could be inadvertently published, which could put the git repository at risk.
- CVE-2023-4853High
A flaw in Quarkus where HTTP security policies are not sanitizing certain character permutations correctly when accepting requests, resulting in incorrect evaluation of permissions. An attacker could bypass the security policy altogether, resulting in unauthorized endpoint access and possibly a denial of service.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

