What’s Vulnerable › Vulnerabilities

CVE-2026-42333: quarkus-openapi-generator has overly broad path-parameter matching that sends authentication headers to unintended operations

• Severity: medium (CVSS 6.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-09 · updated 2026-07-24
• Weakness: CWE-200

Description

Quarkus OpenAPI Generator is Quarkus' extensions for generation of Rest Clients and server stubs generation. Prior to versions 2.11.1-lts, 2.16.0-lts, and 2.17.0, the generated authentication filter matches OpenAPI path templates too broadly when deciding whether to attach credentials. A security scheme configured for one operation can therefore be applied to a different same-method operation whose path only partially resembles the protected template, causing bearer tokens, API keys, or basic credentials to be sent to unintended endpoints. This issue has been patched in versions 2.11.1-lts, 2.16.0-lts, and 2.17.0.

Affected products

• quarkiverse quarkus-openapi-generator: before 2.11.1-lts; before 2.16.0-lts; before 2.17.0

References

• https://github.com/quarkiverse/quarkus-openapi-generator/pull/1586
• https://github.com/quarkiverse/quarkus-openapi-generator/releases/tag/2.11.1-lts
• https://github.com/quarkiverse/quarkus-openapi-generator/releases/tag/2.16.0-lts
• https://github.com/quarkiverse/quarkus-openapi-generator/releases/tag/2.17.0
• https://github.com/quarkiverse/quarkus-openapi-generator/security/advisories/GHSA-fr8f-rwjx-f32v
• https://github.com/quarkiverse/quarkus-openapi-generator/security/advisories/GHSA-fr8f-rwjx-f32v

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