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TI-2026-69068 Aliases CVE-2026-106493GHSA-xvh9-35w9-42m4

Backstage cloud storage catalog reads may leave configured boundaries

Priority LOW 19CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-22 and the CVSS impact.

Summary

Backstage versions before 1.54.6 contain a path traversal flaw (CWE-22) in cloud storage catalog providers, which do not sufficiently validate object paths. A principal able to create or rename objects in a configured Azure Blob Storage or AWS S3 catalog source can cause catalog descriptors to be read from outside the intended storage boundary. The reads are limited to locations reachable with the backend's configured credentials.

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 1.54.6, cloud storage catalog providers did not sufficiently validate object paths. A principal able to create or rename objects in a configured Azure Blob Storage or AWS S3 catalog source could cause catalog descriptors to be read from outside the intended storage boundary, limited to locations reachable with the backend's configured credentials. This issue is fixed in 1.54.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00276 20th percentileScored 2026-11-07
Fix Partial backstage (backstage): 1.54.6plugin-catalog-backend-module-azure (@backstage): 0.17.8, 0.3.21+4 more productsRed 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

VendorProductAffected versionsFixed inStatusSource
backstagebackstagebefore 1.54.61.54.6Patch availableCNA
backstageplugin-catalog-backend-module-azurebefore 0.17.80.17.8Patch availableCNA
backstageplugin-catalog-backend-module-awsbefore 0.4.270.4.27Patch availableCNA
backstageplugin-catalog-backend-module-azurebefore 0.3.210.3.21Patch availableCNA
—@backstage/plugin-catalog-backend-module-azure (npm)before 0.3.210.3.21Patch availableGHSA-xvh9-35w9-42m4
—@backstage/plugin-catalog-backend-module-aws (npm)before 0.4.270.4.27Patch availableGHSA-xvh9-35w9-42m4
—@backstage/backend-defaults (npm)before 0.17.80.17.8Patch availableGHSA-xvh9-35w9-42m4
  • backstage Vendorbackstage Affected before 1.54.6 Fixed in 1.54.6 Patch available CNA
  • plugin-catalog-backend-module-azure Vendorbackstage Affected before 0.17.8 Fixed in 0.17.8 Patch available CNA
  • plugin-catalog-backend-module-aws Vendorbackstage Affected before 0.4.27 Fixed in 0.4.27 Patch available CNA
  • plugin-catalog-backend-module-azure Vendorbackstage Affected before 0.3.21 Fixed in 0.3.21 Patch available CNA
  • @backstage/plugin-catalog-backend-module-azure (npm) Vendor— Affected before 0.3.21 Fixed in 0.3.21 Patch available GHSA-xvh9-35w9-42m4
  • @backstage/plugin-catalog-backend-module-aws (npm) Vendor— Affected before 0.4.27 Fixed in 0.4.27 Patch available GHSA-xvh9-35w9-42m4
  • @backstage/backend-defaults (npm) Vendor— Affected before 0.17.8 Fixed in 0.17.8 Patch available GHSA-xvh9-35w9-42m4

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*before 1.54.6Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage\/backend-defaults:*:*:*:*:*:node.js:*:*before 0.17.8Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-backend-module-aws:*:*:*:*:*:node.js:*:*before 0.4.27Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-backend-module-azure:*:*:*:*:*:node.js:*:*before 0.3.21Vulnerablebackstage
  • cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:* Versions before 1.54.6 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage\/backend-defaults:*:*:*:*:*:node.js:*:* Versions before 0.17.8 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-backend-module-aws:*:*:*:*:*:node.js:*:* Versions before 0.4.27 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-backend-module-azure:*:*:*:*:*:node.js:*:* Versions before 0.3.21 Vulnerable ·backstage

Remediation

Upgrade Backstage to 1.54.6. Upgrade @backstage/plugin-catalog-backend-module-azure to 0.3.21, @backstage/plugin-catalog-backend-module-aws to 0.4.27 and @backstage/backend-defaults to 0.17.8. Red Hat has no plan available for Red Hat Developer Hub 1 or Self-service automation portal 2.

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

  • Fix · CNA backstage (backstage) Fixed in 1.54.6
  • Fix · CNA plugin-catalog-backend-module-azure (@backstage) Fixed in 0.17.8
  • Fix · CNA plugin-catalog-backend-module-aws (@backstage) Fixed in 0.4.27
  • Fix · CNA plugin-catalog-backend-module-azure (@backstage) Fixed in 0.3.21
  • Fix · GHSA-xvh9-35w9-42m4 @backstage/plugin-catalog-backend-module-azure (npm) Fixed in 0.3.21 Advisory →
  • Fix · GHSA-xvh9-35w9-42m4 @backstage/plugin-catalog-backend-module-aws (npm) Fixed in 0.4.27 Advisory →
  • Fix · GHSA-xvh9-35w9-42m4 @backstage/backend-defaults (npm) Fixed in 0.17.8 Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Developer Hub 1AffectedNo fix yet: Fix deferred
Self-service automation portal 2AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-106493
  2. 2026-10-07 Affected versions changed · Red Hat
  3. 2026-10-07 CVSS score added · Red Hat
  4. 2026-10-07 CISA SSVC decision points changed
  5. 2026-10-07 Alias added: GHSA-xvh9-35w9-42m4
  6. 2026-10-07 Fix available: npm/@backstage/[email protected], npm/@backstage/[email protected], npm/@backstage/[email protected] · GHSA-xvh9-35w9-42m4
  7. 2026-10-07 CVSS score added · GHSA-xvh9-35w9-42m4
  8. 2026-10-07 Weakness changed · GHSA-xvh9-35w9-42m4
  9. 2026-10-07 5 new references · GHSA-xvh9-35w9-42m4
  10. 2026-10-23 CVSS score added · NVD
  11. 2026-10-27 Affected versions changed · Red Hat

References

Patch 2

Advisory 2

Other 1

  • 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