Is CVE-2026-106495 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-106495?

CVE-2026-106495 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-106495

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.