backstage/backstage · Security
Backstage: Improper access control in backend action invocation
- GHSA ID
- GHSA-3xr5-8w6c-p5gw
- CVE ID
- CVE-2026-106495
- Severity
- medium
- Published
- Updated
- CVSS
- 4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CVSS v3
- 4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Description
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.
CWEs
- CWE-284 · Improper Access Control
References
- https://github.com/backstage/backstage/security/advisories/GHSA-3xr5-8w6c-p5gw ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-106495 ↗
- https://github.com/backstage/backstage/commit/a8fb34a990a69bcb745e85a3213cf9e5ba2d31a3 ↗
- https://github.com/backstage/backstage/releases/tag/v1.54.6 ↗
- https://github.com/advisories/GHSA-3xr5-8w6c-p5gw ↗