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

Quick assessment

Affected
quarkiverse quarkus-openapi-generator
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Quarkus OpenAPI Generator是Quarkiverse Hub开源的一个基于OpenAPI规范的代码生成工具。 Quarkus OpenAPI Generator 2.11.1-lts之前版本、2.16.0-lts之前版本和2.17.0之前版本存在信息泄露漏洞，该漏洞源于生成的认证过滤器在决定是否附加凭据时匹配OpenAPI路径模板过于宽泛，可能导致安全方案被错误应用于其他操作。

AI Predicted 7.5 Difficulty: Easy EPSS 0.66% · P50

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 3

VendorProduct Version RangeStatus
quarkiverse quarkus-openapi-generator < 2.11.1-lts affected
< 2.16.0-lts affected
< 2.17.0 affected
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I. Basic Information for CVE-2026-42333

Vulnerability Information
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Vulnerability Title
quarkus-openapi-generator has overly broad path-parameter matching that sends authentication headers to unintended operations
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Quarkus OpenAPI Generator 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Quarkus OpenAPI Generator是Quarkiverse Hub开源的一个基于OpenAPI规范的代码生成工具。 Quarkus OpenAPI Generator 2.11.1-lts之前版本、2.16.0-lts之前版本和2.17.0之前版本存在信息泄露漏洞，该漏洞源于生成的认证过滤器在决定是否附加凭据时匹配OpenAPI路径模板过于宽泛，可能导致安全方案被错误应用于其他操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
quarkiverse quarkus-openapi-generator < 2.11.1-lts -

II. Public POCs for CVE-2026-42333

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III. Intelligence Information for CVE-2026-42333

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Patches & Fixes for CVE-2026-42333 (1)

Vendor Advisories for CVE-2026-42333 (1)

Vendor Pages for CVE-2026-42333 (2)

IV. Related Vulnerabilities

Same product: quarkus-openapi-generator
Same vendor: quarkiverse
Same weakness: CWE-200

V. Comments for CVE-2026-42333

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