# CVE-2026-121837: Quarkus REST Data Panache authorization bypass via getter-level @SecureField

Source: https://junglewise.ai/threats/cve-2026-121837-a-flaw-was-found-in-the-rest-data-panache-component-of-quarkus  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-06. Updated: 2026-11-06  
License: CC BY 4.0 with a link back

CVE-2026-121837 · Severity: medium · CVSS 4.3 · Published 2026-11-06

Quarkus is a Java framework for building cloud-native applications. A flaw in its REST Data Panache component fails to enforce security constraints placed on entity property getter methods, allowing authenticated users to infer sensitive data through filtering and sorting operations even though the values themselves are hidden from responses.

Technologies: [Red Hat Quarkus](https://junglewise.ai/threats/technologies/red-hat-quarkus). Vendors: [Red Hat](https://junglewise.ai/threats/vendors/red-hat).

## Quick answers

**Is CVE-2026-121837 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-121837 being exploited in the wild.

**How severe is CVE-2026-121837?** Medium severity, with a CVSS score of 4.3, published 6 November 2026.

**Which products and versions are affected?** Red Hat Quarkus Affected versions not specified in advisory.

**Is there a fix for CVE-2026-121837?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-121837 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-121837?** Check whether you run Red Hat Quarkus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The REST Data Panache resource generator fails to account for @SecureField annotations placed on getter methods when constructing filter and sort query logic, violating CWE-863 (Incorrect Authorization). An authenticated attacker can observe which records match specific filter criteria or how they sort to infer protected data values via information leakage, though the values remain omitted from the API response. A fix is available.

## Affected products

- Red Hat Quarkus Affected versions not specified in advisory

## Timeline

- 2026-11-06: disclosed

## References

- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/security/cve/CVE-2026-121837](https://access.redhat.com/security/cve/CVE-2026-121837)

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