CVE-2026-106499

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0.
Configurations

Configuration 1 (hide)

cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*

History

15 Oct 2026, 02:16

Type Values Removed Values Added
First Time Linuxfoundation backstage
Linuxfoundation
Linuxfoundation backstage\/plugin-scaffolder-backend
CPE cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
References () https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70 - () https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70 - Patch
References () https://github.com/backstage/backstage/releases/tag/v1.54.6 - () https://github.com/backstage/backstage/releases/tag/v1.54.6 - Patch, Release Notes
References () https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg - () https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg - Mitigation, Vendor Advisory

06 Oct 2026, 22:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-06 22:17

Updated : 2026-10-15 02:16


NVD link : CVE-2026-106499

Mitre link : CVE-2026-106499

CVE.ORG link : CVE-2026-106499


JSON object : View

Products Affected

linuxfoundation

  • backstage
  • backstage\/plugin-scaffolder-backend
CWE
CWE-532

Insertion of Sensitive Information into Log File