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TI-2026-69051 Aliases CVE-2026-106455GHSA-q38j-6vcm-2f5m

Server-side request forgery in Backstage TechDocs MkDocs plugin

Priority LOW 34CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-918 and the CVSS impact.

Summary

The @backstage/plugin-techdocs-node package from 0.11.12 before 1.14.7 and from 1.15.0 before 1.15.5 does not properly validate MkDocs plugin configuration in TechDocs. This is server-side request forgery (CWE-918), which lets a documentation build retrieve and publish data from network locations reachable by the build environment. An authenticated attacker who controls a TechDocs source repository can trigger this. Cloud metadata services that require tokens or special headers are not directly accessible through this behavior.

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 0.11.12 until 1.14.7 and 1.15.5, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs plugin configuration in techdocs. An authenticated attacker with control over a TechDocs source repository could cause a documentation build to retrieve and publish data from network locations reachable by the build environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern cloud metadata services that require tokens or special headers are not directly accessible through the affected behavior. This issue is fixed in @backstage/plugin-techdocs-node versions 1.14.7 and 1.15.5.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0042 36th percentileScored 2026-11-07
Fix Partial backstage (backstage): 1.50.6, 1.54.8plugin-techdocs-node (@backstage): 1.14.7, 1.15.5+1 more productRed Hat: 1 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
backstagebackstage0.71.1 to before 1.50.6; 1.51.0-next.0 to before 1.54.81.50.6, 1.54.8Patch availableCNA
backstageplugin-techdocs-node0.11.12 to before 1.14.7; 1.15.0 to before 1.15.51.14.7, 1.15.5Patch availableCNA
—@backstage/plugin-techdocs-node (npm)0.11.12 to before 1.14.71.14.7Patch availableGHSA-q38j-6vcm-2f5m
—@backstage/plugin-techdocs-node (npm)1.15.0 to before 1.15.51.15.5Patch availableGHSA-q38j-6vcm-2f5m
  • backstage Vendorbackstage Affected 0.71.1 to before 1.50.6; 1.51.0-next.0 to before 1.54.8 Fixed in 1.50.6, 1.54.8 Patch available CNA
  • plugin-techdocs-node Vendorbackstage Affected 0.11.12 to before 1.14.7; 1.15.0 to before 1.15.5 Fixed in 1.14.7, 1.15.5 Patch available CNA
  • @backstage/plugin-techdocs-node (npm) Vendor— Affected 0.11.12 to before 1.14.7 Fixed in 1.14.7 Patch available GHSA-q38j-6vcm-2f5m
  • @backstage/plugin-techdocs-node (npm) Vendor— Affected 1.15.0 to before 1.15.5 Fixed in 1.15.5 Patch available GHSA-q38j-6vcm-2f5m

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node:*:*:*:*:*:*:*:*0.11.12 to before 1.14.7; 1.15.0 to before 1.15.5Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*0.71.1 to before 1.50.6; 1.51.1 to before 1.54.8Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage:1.51.0:-:*:*:*:*:*:*1.51.0Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage:1.51.0:next0:*:*:*:*:*:*1.51.0 next0Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage:1.51.0:next1:*:*:*:*:*:*1.51.0 next1Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage:1.51.0:next2:*:*:*:*:*:*1.51.0 next2Vulnerablebackstage
cpe:2.3:a:linuxfoundation:backstage:1.51.0:next3:*:*:*:*:*:*1.51.0 next3Vulnerablebackstage
  • cpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node:*:*:*:*:*:*:*:* Versions 0.11.12 to before 1.14.7; 1.15.0 to before 1.15.5 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:* Versions 0.71.1 to before 1.50.6; 1.51.1 to before 1.54.8 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage:1.51.0:-:*:*:*:*:*:* Versions 1.51.0 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage:1.51.0:next0:*:*:*:*:*:* Versions 1.51.0 next0 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage:1.51.0:next1:*:*:*:*:*:* Versions 1.51.0 next1 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage:1.51.0:next2:*:*:*:*:*:* Versions 1.51.0 next2 Vulnerable ·backstage
  • cpe:2.3:a:linuxfoundation:backstage:1.51.0:next3:*:*:*:*:*:* Versions 1.51.0 next3 Vulnerable ·backstage

Remediation

Update @backstage/plugin-techdocs-node to version 1.14.7 or 1.15.5. The sources list no fixed version for backstage. Red Hat lists Self-service automation portal 2 as affected, with no plan available.

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

  • Fix · CNA backstage (backstage) Fixed in 1.50.6, 1.54.8
  • Fix · CNA plugin-techdocs-node (@backstage) Fixed in 1.14.7, 1.15.5
  • Fix · GHSA-q38j-6vcm-2f5m @backstage/plugin-techdocs-node (npm) Fixed in 1.14.7 Advisory →
  • Fix · GHSA-q38j-6vcm-2f5m @backstage/plugin-techdocs-node (npm) Fixed in 1.15.5 Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Self-service automation portal 2AffectedNo fix yet
Not affected: 1 product
  • Red Hat Developer Hub 1

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-106455
  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-q38j-6vcm-2f5m
  5. 2026-10-07 Fix available: npm/@backstage/[email protected], npm/@backstage/[email protected] · GHSA-q38j-6vcm-2f5m
  6. 2026-10-07 CVSS score added · GHSA-q38j-6vcm-2f5m
  7. 2026-10-07 Weakness changed · GHSA-q38j-6vcm-2f5m
  8. 2026-10-07 8 new references · GHSA-q38j-6vcm-2f5m
  9. 2026-10-07 Priority changed: MEDIUM → LOW
  10. 2026-10-09 CISA SSVC decision points changed
  11. 2026-10-20 Affected versions changed · Red Hat
  12. 2026-10-27 Affected versions changed · Red Hat

References

Patch 4

Advisory 3

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