CVE-2026-106495

medium

Description

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 invocation. An authenticated user could invoke actions that an operator had excluded through action configuration. Existing action permissions and downstream authorization remain enforced. This issue is fixed in version 0.17.8.

References

https://github.com/backstage/backstage/security/advisories/GHSA-3xr5-8w6c-p5gw

https://github.com/backstage/backstage/releases/tag/v1.54.6

https://github.com/backstage/backstage/commit/a8fb34a990a69bcb745e85a3213cf9e5ba2d31a3

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97833

Details

Source: Mitre, NVD

Published: 2026-10-12

Updated: 2026-10-12

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Severity: Medium