Vulnerability · Published Oct 14, 2026 · Assigned by GitHub_M
CVE-2026-53999Radius Controller May Delete a Container Resource via an Injected Deployment Annotation (Multi-Tenant Installs)
High 7.7
In plain English
A high-severity improper input validation in radius from radius-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Radius is a cloud-native, portable application platform that makes app development easier for teams building cloud-native apps. Prior to 0.58.0, the Kubernetes controller deserializes the user-controlled radapp.io/status annotation on a Deployment and uses its container resource identifier for deletion without confirming ownership by that Deployment. An attacker with permission to modify Deployment annotations and knowledge of a target Radius resource ID can forge radapp.io/status and set radapp.io/enabled to false, causing reconciliation to enter the privileged deletion path for another tenant's Radius-managed container resource. In a multi-tenant installation this confused-deputy condition can delete another team's recoverable container resource and disrupt service; in a single-tenant installation the impact is limited to self denial of service. The multi-tenant Radius controller reads the annotations in pkg/controller/reconciler/annotations.go and reaches the privileged delete in pkg/controller/reconciler/deployment_reconciler.go. The issue does not disclose data, grant privileges, or provide persistence. This issue is fixed in version 0.58.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/radius-project/radius | 0.58.0 | GHSA-fp5j-4fj2-4jvq |
| Go | github.com/radius-project/radius | 0.58.0 | GO-2026-5373 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| radius-project | radius | < 0.58.0 |
Weakness: CWE-20, CWE-441 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
References
- https://github.com/radius-project/radius/security/advisories/GHSA-fp5j-4fj2-4jvq x_refsource_CONFIRM
- https://github.com/radius-project/radius/pull/11967 x_refsource_MISC
- https://github.com/radius-project/radius/commit/c4174fc205b838d5eab4f64b4909001ab08c0587 x_refsource_MISC
- https://github.com/radius-project/radius/releases/tag/v0.58.0 x_refsource_MISC