{"id":"CVE-2026-106497","published":"2026-10-06T22:17:04.560","lastModified":"2026-10-07T17:16:49.477","description":"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 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.","cvssScore":4.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwes":["CWE-178","CWE-863"],"vendors":[],"products":[],"references":[{"url":"https://github.com/backstage/backstage/commit/21424faa2e280a6bc6b9e5c5245952f16aafca7b","tags":[]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":[]},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-8429-xpcj-3cg5","tags":[]}],"exploitRefs":[{"url":"https://github.com/backstage/backstage/commit/21424faa2e280a6bc6b9e5c5245952f16aafca7b","tags":[]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":[]},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-8429-xpcj-3cg5","tags":[]}],"hasPoc":true,"ai":null}