4.9
Medium
CVE-2026-106499 Backstage is an open framework for building developer portals
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| backstage 1.54 | earliest → < 1.54.6 | 1.54.6 |
| plugin-scaffolder-backend 4.1 | earliest → < 4.1.0 | 4.1.0 |
Other CVEs of backstage
The 69 CVEs of backstage →
CVE-2026-115923
Backstage is an open framework for building developer portals
6.5
Medium
CVE-2026-106495
Backstage is an open framework for building developer portals
4.3
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CVE-2026-106557
Backstage is an open framework for building developer portals
7.7
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CVE-2026-106563
Backstage is an open framework for building developer portals
5.3
Medium