CVE-2026-106462GHSA-29GX-H2M3-XW44
Backstage: Scaffolder credential handling may allow unintended GitHub authentication fallback
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.54.6, 4.1.0, 0.2.25, 0.3.10, 0.9.13, and 1 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- backstage backstage
fixed in 1.54.6
- @backstage plugin-scaffolder-backend
fixed in 4.1.0
- @backstage plugin-scaffolder-backend-module-azure
fixed in 0.2.25
- @backstage plugin-scaffolder-backend-module-bitbucket-cloud
fixed in 0.3.10
- @backstage plugin-scaffolder-backend-module-bitbucket-server
fixed in 0.2.25
- @backstage plugin-scaffolder-backend-module-github
fixed in 0.9.13
- @backstage plugin-scaffolder-backend-module-gitlab
fixed in 0.11.10
- @backstage/plugin-scaffolder-backendnpm
fixed in 4.1.0
- @backstage/plugin-scaffolder-backend-module-githubnpm
fixed in 0.9.13
- @backstage/plugin-scaffolder-backend-module-gitlabnpm
fixed in 0.11.10
- @backstage/plugin-scaffolder-backend-module-azurenpm
fixed in 0.2.25
- @backstage/plugin-scaffolder-backend-module-bitbucket-cloudnpm
fixed in 0.3.10
- @backstage/plugin-scaffolder-backend-module-bitbucket-servernpm
fixed in 0.2.25