Red Hat Quarkus REST Data Panache privileges management

Summaryinfo

A vulnerability classified as problematic has been found in Red Hat Quarkus. Affected by this vulnerability is an unknown functionality of the component REST Data Panache. The manipulation leads to privileges management. This vulnerability is uniquely identified as CVE-2026-121837. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Red Hat Quarkus (version now known) and classified as problematic. This issue affects some unknown processing of the component REST Data Panache. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality. The summary by CVE is:

A flaw was found in the REST Data Panache component of Quarkus. When a security constraint is applied to an entity property using the @SecureField annotation on its getter method rather than the field itself, the generated REST resource fails to enforce this constraint for filtering and sorting operations. This allows an authenticated user to infer sensitive data values by observing which records match specific filter criteria or how they are ordered, even though the values are omitted from the final response.

The advisory is shared at access.redhat.com. The identification of this vulnerability is CVE-2026-121837 since 11/04/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/06/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Red Hat

Name

• Quarkus

License

• open-source

Website

• Vendor: https://www.redhat.com/

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