Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Backstage's @backstage/plugin-scaffolder-backend, versions before 4.1.0, has an incorrect authorization flaw in its scaffolder task listing. An authenticated internal user may be able to view metadata for scaffolder tasks beyond what the deployment's permission policy intends, though stored task secrets are not included and no integrity or availability impact was identified. Upgrade to @backstage/plugin-scaffolder-backend 4.1.0 or later; until then, restrict the task-list endpoint to users allowed to view all tasks and avoid putting sensitive values in template input parameters.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.3 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0019, the 9th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:33 UTC First seen by agentprime
- 31 Oct 2026, 13:33 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-7hfw-grcm-cqm6
- OSV: GHSA-7hfw-grcm-cqm6
- github.com/backstage/backstage/security/advisories/GHSA-7hfw-grcm-cqm6
- nvd.nist.gov/vuln/detail/CVE-2026-106461
- github.com/backstage/backstage/commit/0253c50673f2832b0b1e9f73348186434e7bd09e
- github.com/backstage/backstage
- github.com/backstage/backstage/releases/tag/v1.54.6