Backstage: Improper access control in backend action invocation
### Impact An authenticated user could invoke actions that an operator had excluded through action configuration. Existing action permissions and downstream authorization remain enforced. ### Patches Patched in `@backstage/backend-defaults` version `0.17.8` ### Workarounds Limit access to action invocation endpoints to trusted service callers until upgrading.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-106495US | — | — | ||
Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper access control in backend action inv… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/backstage/backstagePACKAGE
- https://github.com/backstage/backstage/commit/a8fb34a990a69bcb745e85a3213cf9e5ba2d31a3WEB
- https://github.com/backstage/backstage/releases/tag/v1.54.6WEB
- https://github.com/backstage/backstage/security/advisories/GHSA-3xr5-8w6c-p5gwWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-106495ADVISORY
scry
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