CVE-2026-106493CWE-22path-traversal

CVE-2026-106493

Low · published October 7, 2026

CVSS v3.1
3.0
EPSS
0%
Percentile
16.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.0 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00259 · 16.6th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-10-07T01:17Z
Affected products (4)
ProductVersionsFixed in
linuxfoundation/backstage< 1.54.61.54.6
linuxfoundation/backstage\/backend-defaults< 0.17.80.17.8
linuxfoundation/backstage\/plugin-catalog-backend-module-aws< 0.4.270.4.27
linuxfoundation/backstage\/plugin-catalog-backend-module-azure< 0.3.210.3.21
References (3)
https://github.com/backstage/backstage/commit/47ddbd8b4a3efd812309f759c38f4877fbd9e5ff · [email protected]https://github.com/backstage/backstage/releases/tag/v1.54.6 · [email protected]https://github.com/backstage/backstage/security/advisories/GHSA-xvh9-35w9-42m4 · [email protected]
EPSS history
Timeline
  • 08 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 06 OCT 20:52Z
    Backstage: Cloud storage catalog locations may cross configured storage boundaries
    cvelistv5