Backstage is an open framework for building developer portals. Prior to 1.54.6, scaffolder source-control actions may not consistently enforce intended credential boundaries. An authenticated user could cause an affected action to fall back to broader integration credentials and perform operations with more access than intended. This issue is fixed in 1.54.6 when operators also enable scaffolder.requireScmUserCredentials after upgrading.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
backstage backstage affected
Version Status Constraints
< 1.54.6 affected —
@backstage plugin-scaffolder-backend affected
Version Status Constraints
< 4.1.0 affected —
@backstage plugin-scaffolder-backend-module-azure affected
Version Status Constraints
< 0.2.25 affected —
@backstage plugin-scaffolder-backend-module-bitbucket-cloud affected
Version Status Constraints
< 0.3.10 affected —
@backstage plugin-scaffolder-backend-module-bitbucket-server affected
Version Status Constraints
< 0.2.25 affected —
@backstage plugin-scaffolder-backend-module-github affected
Version Status Constraints
< 0.9.13 affected —
@backstage plugin-scaffolder-backend-module-gitlab affected
Version Status Constraints
< 0.11.10 affected —

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/backstage/backstage/commit/6fb2a41ea47da37eafe5ea744050ef90be6820c0 cve-icon
https://github.com/backstage/backstage/releases/tag/v1.54.6 cve-icon
https://github.com/backstage/backstage/security/advisories/GHSA-29gx-h2m3-xw44 cve-icon
History

Tue, 06 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
Description Backstage is an open framework for building developer portals. Prior to 1.54.6, scaffolder source-control actions may not consistently enforce intended credential boundaries. An authenticated user could cause an affected action to fall back to broader integration credentials and perform operations with more access than intended. This issue is fixed in 1.54.6 when operators also enable scaffolder.requireScmUserCredentials after upgrading.
Title Backstage: Scaffolder credential handling may allow unintended GitHub authentication fallback
Weaknesses CWE-441
CWE-863
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-06T20:30:28.855Z

Reserved: 2026-10-06T16:49:40.591Z

Link: CVE-2026-106462

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses