{"id":"CVE-2026-106562","sourceIdentifier":"security-advisories@github.com","published":"2026-10-07T15:17:17.677","lastModified":"2026-10-16T14:53:52.520","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Backstage is an open framework for building developer portals. Prior to 2.1.6 in @backstage/plugin-search-backend and 1.8.7 in @backstage/plugin-search-backend-module-elasticsearch, search engine permission filtering could return documents denied by policy. An authenticated Backstage user subject to a DENY policy for search document types could receive unauthorized results in deployments with permission.enabled set to true and an Elasticsearch or OpenSearch backend. This issue is fixed in @backstage/plugin-search-backend 2.1.6 and @backstage/plugin-search-backend-module-elasticsearch 1.8.7."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"backstage","product":"backstage","versions":[{"version":"< 1.54.1","status":"affected"}]},{"vendor":"@backstage","product":"plugin-search-backend","versions":[{"version":"< 2.1.6","status":"affected"}]},{"vendor":"@backstage","product":"plugin-search-backend-module-elasticsearch","versions":[{"version":"< 1.8.7","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-07T16:14:40.675570Z","id":"CVE-2026-106562","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-754"},{"lang":"en","value":"CWE-863"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:backstage\\/plugin-search-backend:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.1.6","matchCriteriaId":"9D2D3744-3735-46FD-843E-967DBD15C55F"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:backstage\\/plugin-search-backend-module-elasticsearch:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.8.7","matchCriteriaId":"5904D752-0347-4BE4-B9ED-615C9252BB41"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*","versionEndExcluding":"1.54.1","matchCriteriaId":"C8A1DF85-5DDB-4468-8447-2149B81037E4"}]}]}],"references":[{"url":"https://github.com/backstage/backstage/commit/2d5d3e77d630455d6d48cfa8f31fd3c126fd6f29","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.1","source":"security-advisories@github.com","tags":["Patch","Release Notes"]},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-9325-vq29-gp3v","source":"security-advisories@github.com","tags":["Mitigation","Vendor Advisory"]}]}