CVE-2026-106504
mediumBackstage is an open framework for building developer portals.
Vendor / product: Linuxfoundation — backstage\/plugin-scaffolder-backend
Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder task logs. An authenticated user who can create and read scaffolder tasks may be able to observe sensitive values in task logs in deployments with restrictive action permissions and affected templates. Exploitation requires a denied action whose input contains such a value. This issue is fixed in version 4.1.0.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-10-06 22:17
Modified: 2026-10-13 21:08
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:58 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linuxfoundation / backstage\/plugin-scaffolder-backend <4.1.0
linuxfoundation / backstage <1.54.6
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/backstage/backstage/commit/3eb3dc59eb0da0deccd532f19eb460bb452c9efb
Patch / mitigation: https://github.com/backstage/backstage/releases/tag/v1.54.6
Patch / mitigation: https://github.com/backstage/backstage/security/advisories/GHSA-4xvq-3m68-h444
References
- https://github.com/backstage/backstage/commit/3eb3dc59eb0da0deccd532f19eb460bb452c9efb security-advisories@github.com
- https://github.com/backstage/backstage/releases/tag/v1.54.6 security-advisories@github.com
- https://github.com/backstage/backstage/security/advisories/GHSA-4xvq-3m68-h444 security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗