{"id":"CVE-2026-106497","title":"Backstage is an open framework for building developer portals","summary":"Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-178","CWE-863"],"vendor":"linuxfoundation","product":"backstage_plugin-catalog-backend","affected":["backstage_plugin-catalog-backend < 3.9.1","backstage < 1.54.6"],"patched":["backstage_plugin-catalog-backend 3.9.1","backstage 1.54.6"],"published":"2026-10-06","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:26:26.157","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106497","references":[{"url":"https://github.com/backstage/backstage/commit/21424faa2e280a6bc6b9e5c5245952f16aafca7b","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-8429-xpcj-3cg5","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00193,"epssPercentile":0.08874,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-07T16:19:14.828108Z"},"ingestedAt":"2026-10-06T22:23:15.966Z","slug":"CVE-2026-106497","body":"## Overview\n\nBackstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1.\n\n## Affected\n\n- `backstage_plugin-catalog-backend < 3.9.1`\n- `backstage < 1.54.6`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `backstage_plugin-catalog-backend 3.9.1`\n- `backstage 1.54.6`","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}