CVE-2026-44374 MEDIUM

CVE-2026-44374: Backstage: Catalog unprocessed read endpoints allow authenticated cross-owner data access without permission checks

Vendor @Backstage
Product plugin-catalog-backend-module-unprocessed
Weakness CWE-863 · Incorrect authorization
Published May 14, 2026
Last update May 14, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Backstage is an open framework for building developer portals. Prior to 0.6.11, the unprocessed entities read endpoints in @backstage/plugin-catalog-backend-module-unprocessed do not enforce permission authorization checks. Any authenticated user can access unprocessed entity records regardless of ownership. This is an information disclosure vulnerability affecting Backstage installations using this module. This is patched in @backstage/plugin-catalog-backend-module-unprocessed version 0.6.11, @backstage/plugin-catalog-unprocessed-entities-common version 0.0.15 and @backstage/plugin-catalog-unprocessed-entities version 0.2.30.

Key dates

02Disclosure timeline

May 14, 2026 CVE published
May 14, 2026 Record updated