medium4.3
CVE-2026-106562
Backstage has incorrect authorization in search engine permission filtering
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @backstage/plugin-search-backend | < 2.1.6 | 2.1.6 |
| npm | @backstage/plugin-search-backend-module-elasticsearch | < 1.8.7 | 1.8.7 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linuxfoundation | Backstage\/Plugin-Search-Backend | before 2.1.6 |
| Linuxfoundation | Backstage\/Plugin-Search-Backend-Module-Elasticsearch | before 1.8.7 |
| Linuxfoundation | Backstage | before 1.54.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-9325-vq29-gp3v
- https://github.com/backstage/backstage/security/advisories/GHSA-9325-vq29-gp3v
- https://nvd.nist.gov/vuln/detail/CVE-2026-106562
- https://github.com/backstage/backstage/commit/2d5d3e77d630455d6d48cfa8f31fd3c126fd6f29
- https://github.com/backstage/backstage/releases/tag/v1.54.1