Is CVE-2026-106494 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-106494?

CVE-2026-106494 has a CVSS v3 severity of MEDIUM (4.4).

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CVE-2026-106494

Description

Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8.