In short
- CVE-2026-106496 is a MEDIUM (CVSS 6.5) vulnerability affecting backstage (linuxfoundation), backstage plugin-catalog-backend (linuxfoundation), @backstage/plugin-catalog-backend.
- Chance of exploitation in the next 30 days (EPSS): 0.24%, higher than 15.6% of all vulnerabilities.
- Fix: update to 1.54.6, 3.9.1 or later.
Description
Impact
Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host.
Patches
Patched in @backstage/plugin-catalog-backend version 3.9.1
Workarounds
No practical workarounds are available. Upgrade to the patched version.
NVD description
Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. This issue is fixed in version 3.9.1.
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