{"id":"CVE-2026-106563","revision":"624b2e41d55b4bdeab4abc8192a0eeb5","records":[{"revision":"624b2e41d55b4bdeab4abc8192a0eeb5","observedAt":"2026-10-25T04:17:41.466+00:00","statement":{"source":"nvd","id":"CVE-2026-106563","aliases":[],"title":"Backstage is an open framework for building developer portals. Prior to 0.21.8, the @backstage/plugin-kubernetes-backend package is affected by improper entity validation in deprecated kubernetes services endpoint. An authenticated user wit…","description":"Backstage is an open framework for building developer portals. Prior to 0.21.8, the @backstage/plugin-kubernetes-backend package is affected by improper entity validation in deprecated kubernetes services endpoint. 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. This issue is fixed in version 0.21.8.","state":0,"publishedAt":"2026-10-07T15:17:17.86+00:00","modifiedAt":"2026-10-16T14:50:31.303+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.3,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/backstage/backstage/commit/2d5d3e77d630455d6d48cfa8f31fd3c126fd6f29","https://github.com/backstage/backstage/releases/tag/v1.54.1","https://github.com/backstage/backstage/security/advisories/GHSA-r9ph-3637-55px"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106563","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-20","CWE-862"],"productCriteria":["cpe:2.3:a:linuxfoundation:backstage\\/plugin-kubernetes-backend:*:*:*:*:*:node.js:*:*","cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-10-07T15:17:17.860","lastModified":"2026-10-16T14:50:31.303"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-106563","identifiers":["CVE-2026-106563"]},"retained":false,"historicalAffected":[]}],"coverage":[]}