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Medium 4.3Published Oct 7, 2026

CVE-2026-106562Backstage: Incorrect authorization in search engine permission filtering

Updated under an hour ago ()

Does this affect you?

It affects backstage and 5 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
4.3 MEDIUM (v3.1, CNA)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
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Oct 7, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
backstage backstage
backstage:backstage (from the name)
before 1.54.1
CNA record
@backstage plugin-search-backend
backstage:plugin_search_backend (from the name)
before 2.1.6
CNA record
@backstage plugin-search-backend-module-elasticsearch
backstage:plugin_search_backend_module_elasticsearch (from the name)
before 1.8.7
CNA record
linuxfoundation backstage/plugin-search-backend
linuxfoundation:backstage/plugin-search-backend
before 2.1.6
NVD
linuxfoundation backstage/plugin-search-backend-module-elasticsearch
linuxfoundation:backstage/plugin-search-backend-module-elasticsearch
before 1.8.7
NVD
linuxfoundation backstage
linuxfoundation:backstage
before 1.54.1
NVD

References

  • x-refsource-confirm, mitigation, vendor-advisory
  • x-refsource-misc, patch
  • x-refsource-misc, patch, release-notes

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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