TI-2026-69168 Aliases CVE-2026-106561 GHSA-p795-mqf2-36mf

Sensitive data exposure in Backstage Kubernetes resource queries

LOW 22CWE-200Published 2026-10-07 · Updated 2026-10-07

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure, Security bypass
Confidentiality · integrity · availability: Low · None · None
Fix status: Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-200 and CWE-863.

Summary

The @backstage/plugin-kubernetes-backend package before 0.21.9 in Backstage is affected by a sensitive information exposure flaw (CWE-200). An authenticated user with standard Kubernetes resource read permission can retrieve sensitive values that the plugin is designed to mask, potentially including credentials from connected clusters. Exposure is limited to resources the Backstage service account can read that match the targeted catalog entity's namespace and label selector.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Backstage is an open framework for building developer portals. Prior to 0.21.9, the @backstage/plugin-kubernetes-backend package is affected by sensitive information disclosure in kubernetes resource queries. An authenticated user holding the standard Kubernetes resource read permission could retrieve sensitive values that the Kubernetes plugin is designed to mask, potentially exposing credentials and other confidential material held in the connected clusters. Exposure is limited to resources that the Backstage service account is permitted to read and that match the targeted catalog entity's namespace and label selector. Deployments whose cluster credentials do not grant read access to these resources are unaffected. This issue is fixed in version 0.21.9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00197 9th percentileScored 2026-11-07

Fix Partial backstage (backstage): 1.54.2plugin-kubernetes-backend (@backstage): 0.21.9+1 more productRed Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
backstage	backstage	before 1.54.2	1.54.2	Patch available	CNA
backstage	plugin-kubernetes-backend	before 0.21.9	0.21.9	Patch available	CNA
—	@backstage/plugin-kubernetes-backend (npm)	before 0.21.9	0.21.9	Patch available	GHSA-p795-mqf2-36mf

backstage Vendorbackstage Affected before 1.54.2 Fixed in 1.54.2 Patch available CNA
plugin-kubernetes-backend Vendorbackstage Affected before 0.21.9 Fixed in 0.21.9 Patch available CNA
@backstage/plugin-kubernetes-backend (npm) Vendor— Affected before 0.21.9 Fixed in 0.21.9 Patch available GHSA-p795-mqf2-36mf

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:linuxfoundation:backstage\/plugin-kubernetes-backend::::::node.js::*	before 0.21.9	Vulnerable	backstage
cpe:2.3:a:linuxfoundation:backstage::::::::	before 1.54.2	Vulnerable	backstage

cpe:2.3:a:linuxfoundation:backstage\/plugin-kubernetes-backend:*:*:*:*:*:node.js:*:* Versions before 0.21.9 Vulnerable ·backstage
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:* Versions before 1.54.2 Vulnerable ·backstage

Remediation

Upgrade @backstage/plugin-kubernetes-backend to 0.21.9, the fixed version on npm. The sources list no fixed version for backstage. Red Hat Developer Hub 1 and Self-service automation portal 2 are affected without a fix, and Red Hat lists no available plan for them.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fix · CNA backstage (backstage) Fixed in 1.54.2
Fix · CNA plugin-kubernetes-backend (@backstage) Fixed in 0.21.9
Fix · GHSA-p795-mqf2-36mf @backstage/plugin-kubernetes-backend (npm) Fixed in 0.21.9 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Developer Hub 1	Affected	No fix yet: Fix deferred
Self-service automation portal 2	Affected	No fix yet: Fix deferred

Timeline

2026-10-07 Threatist record created from CVE-2026-106561
2026-10-07 CISA SSVC decision points changed
2026-10-07 Alias added: GHSA-p795-mqf2-36mf
2026-10-07 Fix available: npm/@backstage/[email protected] · GHSA-p795-mqf2-36mf
2026-10-07 CVSS score added · GHSA-p795-mqf2-36mf
2026-10-07 Weakness changed · GHSA-p795-mqf2-36mf
2026-10-07 5 new references · GHSA-p795-mqf2-36mf
2026-10-08 Affected versions changed · Red Hat
2026-10-08 CVSS score added · Red Hat
2026-10-27 Affected versions changed · Red Hat

References

Patch 2

Advisory 2

Other 1

https://github.com/backstage/backstage

TI-2023-17988 Insecure sandbox in Backstage Scaffolder plugin CVSS 3.1CRITICAL 9.9
TI-2026-69075 Sensitive information exposure in Backstage Scaffolder CVSS 3.1CRITICAL 9.6
TI-2026-69061 Path traversal in Backstage Bitbucket pull-request scaffolder actions CVSS 3.1CRITICAL 9.9
TI-2026-60083 Backstage: Improper input validation in TechDocs MkDocs configuration CVSS 3.1HIGH 8.8
TI-2026-69165 Backstage TechDocs config flaw allows code execution CVSS 3.1HIGH 8.8
TI-2026-69083 Code injection via MkDocs theme configuration in Backstage TechDocs CVSS 3.1HIGH 8.8

See all 52 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences