Path Traversal in @Backstage Plugin-Catalog-Backend-Module-Aws

CVE-2026-106493

Backstage is an open framework for building developer portals. Prior to 1.54.6, cloud storage catalog providers did not sufficiently validate object paths. A principal able to create or rename objects in a configured Azure Blob Storage or AWS S3 catalog source could cause catalog descriptors to be read from outside the intended storage boundary, limited to locations reachable with the backend's configured credentials. This issue is fixed in 1.54.6.

Vulnerability class: Path Traversal (Directory Traversal)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 3.0 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-106493?
CVE-2026-106493 is a low-severity vulnerability in @Backstage Plugin-Catalog-Backend-Module-Aws, classified under Path Traversal. CVSS score: 3.0/10. Published 2026-10-06.
How severe is CVE-2026-106493?
Low severity. CVSS v3 base score is 3.0 out of 10.