CVE-2026-106504Backstage: Sensitive information exposure in scaffolder task logs
Updated under an hour ago ()
Does this affect you?
It affects backstage and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-532
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
backstage backstage backstage:backstage (from the name) | before 1.54.6 | CNA record |
@backstage plugin-scaffolder-backend backstage:plugin_scaffolder_backend (from the name) | before 4.1.0 | CNA record |
linuxfoundation backstage/plugin-scaffolder-backend linuxfoundation:backstage/plugin-scaffolder-backend | before 4.1.0 | NVD |
linuxfoundation backstage linuxfoundation:backstage | before 1.54.6 | NVD |
References
- https://github.com/backstage/backstage/security/advisories/GHSA-4xvq-3m68-h444x-refsource-confirm, mitigation, vendor-advisory
- https://github.com/backstage/backstage/commit/3eb3dc59eb0da0deccd532f19eb460bb452c9efbx-refsource-misc, patch
- https://github.com/backstage/backstage/releases/tag/v1.54.6x-refsource-misc, patch, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.