CVE-2026-106497CWE-178CWE-863broken-access-control

CVE-2026-106497

Medium · published October 7, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
8.5
In the wild
Unconfirmed
What it is

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00193 · 8.5th percentile
Weaknesses
CWE-178 · Improper Handling of Case Sensitivity; CWE-863 · Incorrect Authorization
Published
2026-10-07T02:17Z
Affected products (2)
ProductVersionsFixed in
linuxfoundation/backstage_plugin-catalog-backend< 3.9.13.9.1
linuxfoundation/backstage< 1.54.61.54.6
References (3)
https://github.com/backstage/backstage/commit/21424faa2e280a6bc6b9e5c5245952f16aafca7b · [email protected]https://github.com/backstage/backstage/releases/tag/v1.54.6 · [email protected]https://github.com/backstage/backstage/security/advisories/GHSA-8429-xpcj-3cg5 · [email protected]
EPSS history
Timeline
  • 08 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 06 OCT 21:18Z
    Backstage: Inconsistent catalog property permission evaluation
    cvelistv5