CVE-2026-44374

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

State: Published
Severity: 4.3 Medium
Published: May 14, 2026
Updated: May 14, 2026
Reserved: May 5, 2026

Description

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.

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-863 Incorrect Authorization

Affected Products

Product	Versions
plugin-catalog-backend-module-unprocessed@backstage	< 0.6.11Affected
plugin-catalog-unprocessed-entities@backstage	< 0.2.30Affected
plugin-catalog-unprocessed-entities-common@backstage	< 0.0.15Affected

References

https://github.com/backstage/backstage/security/advisories/GHSA-p7g9-rp3g-mgfg

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