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GHSA-9325-vq29-gp3v

MediumCVSS 4.3 / 10
Published Oct 7, 2026·Last modified Oct 7, 2026
Affected Components(2)
npm logo@backstage/plugin-search-backend
< 2.1.6
npm logo@backstage/plugin-search-backend-module-elasticsearch
< 1.8.7
Description

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-backend to 2.1.6
  • Upgrade @backstage/plugin-search-backend-module-elasticsearch to 1.8.7

Workarounds

If you are unable to upgrade immediately:

  • Temporarily modify permission policies to use CONDITIONAL decisions with per-result filtering rather than blanket DENY for 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.
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Risk Scores
Base Score
4.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.

Threat Intelligence
4.0

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.20%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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