Search Engine Permission Flaw in Backstage by Spotify
CVE-2026-106562

4.3MEDIUM

Key Information:

Vendor

Backstage

Status
Backstage
Plugin-search-backend
Plugin-search-backend-module-Elastic
Vendor
CVE Published:
7 October 2026

What is CVE-2026-106562?

The Backstage framework from Spotify encountered a significant issue where its search engine permission filtering did not properly enforce policies. This flaw allowed authenticated users, even those subject to a DENY policy for certain search document types, to access unauthorized search results. This vulnerability arises in deployments using a permission-enabled configuration with either Elasticsearch or OpenSearch as a backend, potentially exposing sensitive information. Versions @backstage/plugin-search-backend 2.1.6 and @backstage/plugin-search-backend-module-elasticsearch 1.8.7 and higher have implemented fixes to remediate this issue.

Affected Version(s)

backstage < 1.54.1

plugin-search-backend < 2.1.6

plugin-search-backend-module-elasticsearch < 1.8.7

References

https://github.com/backstage/backstage/security/advisorie...
x_refsource_CONFIRM
https://github.com/backstage/backstage/commit/2d5d3e77d63...
x_refsource_MISC
https://github.com/backstage/backstage/releases/tag/v1.54.1
x_refsource_MISC

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.