CVE-2026-106497

Backstage: Inconsistent catalog property permission evaluation

State: Published
Severity: 4.3 Medium
Published: Oct 6, 2026
Updated: Oct 7, 2026
Reserved: Oct 6, 2026

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 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.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-178 Improper Handling of Case Sensitivity
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
backstagebackstage	< 1.54.6Affected
plugin-catalog-backend@backstage	< 3.9.1Affected

References

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