Backstage has incorrect authorization in search engine permission filtering
Impact
An authenticated Backstage user subject to a DENY policy for search document types could receive search results they were not authorized to view. This affects deployments with permission.enabled: true and an Elasticsearch or OpenSearch search backend.
Patches
- Upgrade
@backstage/plugin-search-backendto 2.1.6 - Upgrade
@backstage/plugin-search-backend-module-elasticsearchto 1.8.7
Workarounds
If you are unable to upgrade immediately:
- Temporarily modify permission policies to use
CONDITIONALdecisions with per-result filtering rather than blanketDENYfor search document types - Restrict Elasticsearch/OpenSearch index access at the cluster level so that the search service account can only reach expected Backstage indices, limiting the blast radius if the authorization bypass is triggered.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | @backstage/plugin-search-backend | < 2.1.6 | 2.1.6 |
| Paquete de npm | @backstage/plugin-search-backend-module-elasticsearch | < 1.8.7 | 1.8.7 |
Referencias
- 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
- https://github.com/backstage/backstage/releases/tag/v1.54.1
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Debilidad (CWE)
CWE-754, CWE-863- Plataforma
- npm
- Paquete
@backstage/plugin-search-backend, @backstage/plugin-search-backend-module-elasticsearch- Publicada
- 07.10.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-9325-vq29-gp3v - CC BY 4.0
Historial de vulnerabilidades: @backstage/plugin-search-backend
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