https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-08T04:00:31.055611+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/fkie_cve-2026-106492 fkie_cve-2026-106492 2026-10-08T04:00:31.599851+00:00

Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions (e.g., read-only) could bypass those restrictions by routing requests through plugin delegation paths. This could allow a restricted service to perform operations beyond its intended scope, including write operations on plugins it was restricted to read-only access for. This issue is fixed in versions 0.16.1 and 0.17.8.

 https://vulnerability.circl.lu/vuln/ghsa-cq7v-rfgc-5c7v GHSA-cq7v-rfgc-5c7v — Backstage: Improper preservation of access restrictions during service credential delegation 2026-10-08T04:00:31.599965+00:00

Affected: npm: @backstage/backend-defaults

### Impact

An external service credential configured with access restrictions (e.g., read-only) could bypass those restrictions by routing requests through plugin delegation paths. This could allow a restricted service to perform operations beyond its intended scope, including write operations on plugins it was restricted to read-only access for.

### Patches

Patched in `@backstage/backend-defaults` version `0.17.8`

### Workarounds

If you're unable to upgrade immediately:

- If practical, replace restricted credentials with separate, purpose-specific unrestricted credentials scoped to trusted consumers. - Restrict network-level access to Backstage backend API endpoints to trusted callers only.