What is CVE-2026-106461?

CVE-2026-106461 is a medium-severity vulnerability in @Backstage Plugin-Scaffolder-Backend, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-10-06.

How severe is CVE-2026-106461?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in @Backstage Plugin-Scaffolder-Backend

CVE-2026-106461

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by incorrect authorization in scaffolder task listing. An authenticated internal user may be able to view metadata for scaffolder tasks outside the visibility intended by a deployment's permission policy. Stored task secrets are not included in the affected response, and no integrity or availability impact was identified. This issue is fixed in version 4.1.0.

Vulnerability class: Broken Access Control

Published 2026-10-06 · last modified 2026-10-07.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

@Backstage Plugin-Scaffolder-Backend — versions < 4.1.0
Backstage — versions < 1.54.6

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

Frequently asked questions

What is CVE-2026-106461?: CVE-2026-106461 is a medium-severity vulnerability in @Backstage Plugin-Scaffolder-Backend, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-10-06.
How severe is CVE-2026-106461?: Medium severity. CVSS v3 base score is 4.3 out of 10.