CVE-2026-106462Backstage: Scaffolder credential handling may allow unintended GitHub authentication fallback
Updated under an hour ago ()
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It affects backstage and 6 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-441, CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Undergoing Analysis
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
backstage backstage backstage:backstage (from the name) | before 1.54.6 | CNA record |
@backstage plugin-scaffolder-backend backstage:plugin_scaffolder_backend (from the name) | before 4.1.0 | CNA record |
@backstage plugin-scaffolder-backend-module-azure backstage:plugin_scaffolder_backend_module_azure (from the name) | before 0.2.25 | CNA record |
@backstage plugin-scaffolder-backend-module-bitbucket-cloud backstage:plugin_scaffolder_backend_module_bitbucket_cloud (from the name) | before 0.3.10 | CNA record |
@backstage plugin-scaffolder-backend-module-bitbucket-server backstage:plugin_scaffolder_backend_module_bitbucket_server (from the name) | before 0.2.25 | CNA record |
@backstage plugin-scaffolder-backend-module-github backstage:plugin_scaffolder_backend_module_github (from the name) | before 0.9.13 | CNA record |
@backstage plugin-scaffolder-backend-module-gitlab backstage:plugin_scaffolder_backend_module_gitlab (from the name) | before 0.11.10 | CNA record |
References
- https://github.com/backstage/backstage/security/advisories/GHSA-29gx-h2m3-xw44x-refsource-confirm
- https://github.com/backstage/backstage/commit/6fb2a41ea47da37eafe5ea744050ef90be6820c0x-refsource-misc
- https://github.com/backstage/backstage/releases/tag/v1.54.6x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.