CVE-2026-106496

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.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 15% of CVEs (scores of 2026-10-25)

CWEs

CWE-22, CWE-863

Published

2026-10-06

Modified

2026-10-16

Record from

the NVD, synced 2026-10-19

Affected

• linuxfoundation:backstage
• linuxfoundation:backstage_plugin-catalog-backend

Packages (OSV)

References

• https://github.com/backstage/backstage/commit/23774b61560d851bc69cd6a77d12561b24d11afd
• https://github.com/backstage/backstage/releases/tag/v1.54.6
• https://github.com/backstage/backstage/security/advisories/GHSA-pcmq-25r3-5w9v

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