Information Disclosure Vulnerability in Backstage by Spotify
CVE-2026-44374

4.3MEDIUM

Key Information:

Vendor

@backstage

Status
Plugin-catalog-backend-module-unprocessed
Plugin-catalog-unprocessed-entities
Plugin-catalog-unprocessed-entities-common
Vendor
CVE Published:
14 May 2026

What is CVE-2026-44374?

Backstage, a developer portal framework by Spotify, contains a vulnerability due to inadequate permission checks in the unprocessed entities read endpoints of the plugin @backstage/plugin-catalog-backend-module-unprocessed. This allows any authenticated user to access unprocessed entity records without proper ownership verification, leading to potential data exposure. The issue has been rectified in versions 0.6.11 for @backstage/plugin-catalog-backend-module-unprocessed, 0.0.15 for @backstage/plugin-catalog-unprocessed-entities-common, and 0.2.30 for @backstage/plugin-catalog-unprocessed-entities.

Affected Version(s)

plugin-catalog-backend-module-unprocessed < 0.6.11

plugin-catalog-unprocessed-entities < 0.2.30

plugin-catalog-unprocessed-entities-common < 0.0.15

References

https://github.com/backstage/backstage/security/advisorie...
x_refsource_CONFIRM

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.