GHSA-r9ph-3637-55px

Source

https://github.com/advisories/GHSA-r9ph-3637-55px

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-r9ph-3637-55px/GHSA-r9ph-3637-55px.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-r9ph-3637-55px

Aliases

CVE-2026-106563

Published

2026-10-07T18:02:37Z

Modified

2026-10-07T18:15:11Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

Backstage: Improper entity validation in deprecated Kubernetes services endpoint

Details

Impact

An authenticated user with Kubernetes read permissions could access Kubernetes workload data beyond their intended scope by supplying crafted entity data to the deprecated services endpoint. The exposure is limited to read-only access to Kubernetes object metadata across configured clusters.

Patches

Patched in @backstage/plugin-kubernetes-backend version 0.21.8.

Workarounds

Disable the deprecated /services/:serviceId route by deploying a custom Kubernetes router that omits it.
Restrict access to the kubernetes.resources.read permission to limit the set of users who can reach the endpoint.

Database specific

{
    "cwe_ids": [
        "CWE-20",
        "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T18:02:37Z",
    "nvd_published_at": "2026-10-07T15:17:17Z",
    "severity": "MODERATE"
}

References

Affected packages

npm / @backstage/plugin-kubernetes-backend

Package

Name: @backstage/plugin-kubernetes-backend; View open source insights on deps.dev
Purl: pkg:npm/%40backstage/plugin-kubernetes-backend

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

0.21.8

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-r9ph-3637-55px/GHSA-r9ph-3637-55px.json"