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TI-2026-69056 Aliases CVE-2026-106460GHSA-xm5q-p7w3-x6cp

Backstage auth-node ignores unverified OAuth profile emails

Priority LOW 32CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · 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-287.

Summary

The @backstage/plugin-auth-node package, from 0.3.0 before 0.6.15 and from 0.7.0 before 0.7.5, does not consistently honor an explicit negative email verification during shared OAuth profile normalization (CWE-287). An admitted identity-provider user who can supply or change an unverified email can assume another catalog identity and its access and permissions in deployments that resolve catalog identities by the selected profile email. The backstage package from 1.18.0 before 1.49.7 and from 1.50.0-next.0 before 1.54.7 is also listed as affected. An absent email_verified claim alone is not affected.

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. From 0.3.0 until 0.6.15 and 0.7.5, the @backstage/plugin-auth-node package did not consistently honor explicit negative email verification during shared OAuth profile normalization. The affected paths include a selected profile email marked verified: false, a matching raw provider email marked email_verified: false, and an email obtained only from an ID token marked email_verified: false. Exploitation requires an admitted identity-provider user who can supply or change an unverified email and a deployment that uses the selected profile email to resolve catalog identities. The verification metadata must apply to the selected email; an absent email_verified claim alone is not affected. In an affected configuration, the user may assume another catalog identity and obtain its associated access and permissions. This issue is fixed in versions 0.6.15 and 0.7.5.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00396 34th percentileScored 2026-11-07
Fix Partial backstage (backstage): 1.49.7, 1.54.7plugin-auth-node (@backstage): 0.6.15, 0.7.5+1 more productRed Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
backstagebackstage1.18.0 to before 1.49.7; 1.50.0-next.0 to before 1.54.71.49.7, 1.54.7Patch availableCNA
backstageplugin-auth-node0.3.0 to before 0.6.15; 0.7.0 to before 0.7.50.6.15, 0.7.5Patch availableCNA
—@backstage/plugin-auth-node (npm)0.3.0 to before 0.6.150.6.15Patch availableGHSA-xm5q-p7w3-x6cp
—@backstage/plugin-auth-node (npm)0.7.0 to before 0.7.50.7.5Patch availableGHSA-xm5q-p7w3-x6cp
  • backstage Vendorbackstage Affected 1.18.0 to before 1.49.7; 1.50.0-next.0 to before 1.54.7 Fixed in 1.49.7, 1.54.7 Patch available CNA
  • plugin-auth-node Vendorbackstage Affected 0.3.0 to before 0.6.15; 0.7.0 to before 0.7.5 Fixed in 0.6.15, 0.7.5 Patch available CNA
  • @backstage/plugin-auth-node (npm) Vendor— Affected 0.3.0 to before 0.6.15 Fixed in 0.6.15 Patch available GHSA-xm5q-p7w3-x6cp
  • @backstage/plugin-auth-node (npm) Vendor— Affected 0.7.0 to before 0.7.5 Fixed in 0.7.5 Patch available GHSA-xm5q-p7w3-x6cp

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:linuxfoundation:backstage\/plugin-auth-node:*:*:*:*:*:node.js:*:*0.3.0 to before 0.6.15; 0.7.0 to before 0.7.5Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*0.4.0 to before 0.5.15Vulnerablebackstage
  • cpe:2.3:a:linuxfoundation:backstage\/plugin-auth-node:*:*:*:*:*:node.js:*:* Versions 0.3.0 to before 0.6.15; 0.7.0 to before 0.7.5 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:* Versions 0.4.0 to before 0.5.15 Vulnerable ·backstage

Remediation

Upgrade @backstage/plugin-auth-node to the fixed version 0.6.15 or 0.7.5 that matches the installed release line. The sources list no fixed version for backstage. Red Hat lists no available plan 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 1.49.7, 1.54.7
  • Fix · CNA plugin-auth-node (@backstage) Fixed in 0.6.15, 0.7.5
  • Fix · GHSA-xm5q-p7w3-x6cp @backstage/plugin-auth-node (npm) Fixed in 0.6.15 Advisory →
  • Fix · GHSA-xm5q-p7w3-x6cp @backstage/plugin-auth-node (npm) Fixed in 0.7.5 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-2026-106460
  2. 2026-10-07 Affected versions changed · Red Hat
  3. 2026-10-07 CVSS score added · Red Hat
  4. 2026-10-07 Alias added: GHSA-xm5q-p7w3-x6cp
  5. 2026-10-07 Fix available: npm/@backstage/[email protected], npm/@backstage/[email protected] · GHSA-xm5q-p7w3-x6cp
  6. 2026-10-07 CVSS score added · GHSA-xm5q-p7w3-x6cp
  7. 2026-10-07 Weakness changed · GHSA-xm5q-p7w3-x6cp
  8. 2026-10-07 8 new references · GHSA-xm5q-p7w3-x6cp
  9. 2026-10-07 Priority changed: MEDIUM → LOW
  10. 2026-10-09 CISA SSVC decision points changed
  11. 2026-10-27 Affected versions changed · Red Hat

References

Patch 6

Advisory 1

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