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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @backstage/plugin-search-backend | < 2.1.6 | 2.1.6 |
| npm package | @backstage/plugin-search-backend-module-elasticsearch | < 1.8.7 | 1.8.7 |
References
- 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
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-754, CWE-863- Platform
- npm
- Package
@backstage/plugin-search-backend, @backstage/plugin-search-backend-module-elasticsearch- Disclosed
- 07.10.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9325-vq29-gp3v - CC BY 4.0
Vulnerability history: @backstage/plugin-search-backend
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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