What is CVE-2026-106497?

CVE-2026-106497 is a medium-severity vulnerability in @Backstage Plugin-Catalog-Backend, classified under Improper Handling of Case Sensitivity. CVSS score: 4.3/10. Published 2026-10-06.

How severe is CVE-2026-106497?

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

Auth bypass in @Backstage Plugin-Catalog-Backend

CVE-2026-106497

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1.

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-Catalog-Backend — versions < 3.9.1
Backstage — versions < 1.54.6

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-106497?: CVE-2026-106497 is a medium-severity vulnerability in @Backstage Plugin-Catalog-Backend, classified under Improper Handling of Case Sensitivity. CVSS score: 4.3/10. Published 2026-10-06.
How severe is CVE-2026-106497?: Medium severity. CVSS v3 base score is 4.3 out of 10.