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TI-2026-69059 Aliases CVE-2026-106463GHSA-gp6m-x9vw-5c5x

Improper authorization in Backstage GitLab user ingestion

Priority LOW 24CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · 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-863.

Summary

The @backstage/plugin-catalog-backend-module-gitlab package before 0.8.7 contains an improper authorization flaw (CWE-863) in GitLab organizational user ingestion. Deployments that enable GitLab organization event ingestion and rely on scoped catalog users as an access boundary may admit an unintended catalog identity. Depending on sign-in and permission configuration, a remote attacker with low privileges may gain unauthorized access with the permissions of a standard authenticated user.

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 0.8.7, the @backstage/plugin-catalog-backend-module-gitlab package is affected by improper authorization in gitlab organizational user ingestion. Deployments that enable GitLab organization event ingestion and rely on scoped catalog users as an access boundary may admit an unintended catalog identity. Depending on sign-in and permission configuration, this may allow unauthorized access with the permissions of a standard authenticated user. This issue is fixed in version 0.8.7.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00172 6th percentileScored 2026-11-07
Fix Partial backstage (backstage): 1.54.6plugin-catalog-backend-module-gitlab (@backstage): 0.8.7+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

VendorProductAffected versionsFixed inStatusSource
backstagebackstagebefore 1.54.61.54.6Patch availableCNA
backstageplugin-catalog-backend-module-gitlabbefore 0.8.70.8.7Patch availableCNA
—@backstage/plugin-catalog-backend-module-gitlab (npm)before 0.8.70.8.7Patch availableGHSA-gp6m-x9vw-5c5x
  • backstage Vendorbackstage Affected before 1.54.6 Fixed in 1.54.6 Patch available CNA
  • plugin-catalog-backend-module-gitlab Vendorbackstage Affected before 0.8.7 Fixed in 0.8.7 Patch available CNA
  • @backstage/plugin-catalog-backend-module-gitlab (npm) Vendor— Affected before 0.8.7 Fixed in 0.8.7 Patch available GHSA-gp6m-x9vw-5c5x

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-backend-module-gitlab:*:*:*:*:*:node.js:*:*before 0.8.7Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*before 1.54.6Vulnerablebackstage
  • cpe:2.3:a:linuxfoundation:backstage\/plugin-catalog-backend-module-gitlab:*:*:*:*:*:node.js:*:* Versions before 0.8.7 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:* Versions before 1.54.6 Vulnerable ·backstage

Remediation

Update @backstage/plugin-catalog-backend-module-gitlab to version 0.8.7. No fixed version is listed for backstage. Red Hat has no plan available for Red Hat Developer Hub 1 and 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-gitlab (@backstage) Fixed in 0.8.7
  • Fix · GHSA-gp6m-x9vw-5c5x @backstage/plugin-catalog-backend-module-gitlab (npm) Fixed in 0.8.7 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. 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-2026-106463
  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 Priority changed: MEDIUM → LOW
  6. 2026-10-07 Alias added: GHSA-gp6m-x9vw-5c5x
  7. 2026-10-07 Fix available: npm/@backstage/[email protected] · GHSA-gp6m-x9vw-5c5x
  8. 2026-10-07 CVSS score added · GHSA-gp6m-x9vw-5c5x
  9. 2026-10-07 Weakness changed · GHSA-gp6m-x9vw-5c5x
  10. 2026-10-07 5 new references · GHSA-gp6m-x9vw-5c5x
  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