CVE-2026-42333

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

MEDIUM
6.3
CVSS Score
Published: May 9, 2026 at 07:16 PM UTC
Updated: July 24, 2026 at 09:20 PM UTC
1 product affected across 1 vendorQuarkus OpenAPI Generator

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.4%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.11.1-ltsv < 2.16.0-ltsv < 2.17.0
Affected range stops below 2.11.1-lts, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.16.0-lts, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.17.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-200

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