{"id":"CVE-2026-106563","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-106563","generatedAt":"2026-10-27T22:46:48.386Z","title":"Prior to 0.21.8, the @backstage/plugin-kubernetes-backend package is affected by improper entity validation in deprecated kubernetes services endpoint.","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.","published":"2026-10-07T15:17:18.000Z","lastModified":"2026-10-16T14:50:31.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-20","CWE-862"],"affected":["linuxfoundation/backstage\\/plugin-kubernetes-backend","linuxfoundation/backstage"],"epss":{"score":0.00225,"percentile":0.13007,"date":"2026-10-26","history":[{"date":"2026-10-08","score":0.00222,"percentile":0.11768}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-16T17:00:51.000Z","detail":{"from":"5.3","score":"6.5","severity":"MEDIUM","fromSeverity":"MEDIUM"},"summary":"Now scored CVSS 6.5 MEDIUM (was 5.3)."},{"kind":"new","label":"New CVE","at":"2026-10-07T15:17:18.000Z","detail":{"score":"5.3","severity":"MEDIUM","publishedAt":"2026-10-07T15:17:17.860Z"},"summary":"New CVE, medium severity (CVSS 6.5)."}],"references":[{"url":"https://github.com/backstage/backstage/commit/2d5d3e77d630455d6d48cfa8f31fd3c126fd6f29","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.1","tags":["Patch","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-r9ph-3637-55px","tags":["Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106563","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}