Is CVE-2026-106497 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-106497 being exploited in the wild.

How severe is CVE-2026-106497?

Medium severity, with a CVSS score of 4.3, published 6 October 2026.

Which products and versions are affected?

Backstage Plugin-Catalog-Backend prior to 3.9.1.

Is there a fix for CVE-2026-106497?

Yes: fixed in 3.9.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-106497 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-106497?

Check whether you run Backstage Plugin-Catalog-Backend at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-106497: Backstage plugin-catalog-backend permission evaluation bypass

CVE-2026-106497 · Severity: medium · CVSS 4.3 · Published 2026-10-06

Backstage is an open-source developer portal framework that manages organization catalogs and access controls. A flaw in the catalog permission system allowed authenticated users to bypass access restrictions on entity data that administrators intended to keep confidential. An attacker with valid credentials could read sensitive catalog information they should not have access to.

Technologies: Backstage Plugin-Catalog-Backend. Vendors: Backstage.

Quick answers

Is CVE-2026-106497 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-106497 being exploited in the wild.
How severe is CVE-2026-106497?: Medium severity, with a CVSS score of 4.3, published 6 October 2026.
Which products and versions are affected?: Backstage Plugin-Catalog-Backend prior to 3.9.1.
Is there a fix for CVE-2026-106497?: Yes: fixed in 3.9.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-106497 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-106497?: Check whether you run Backstage Plugin-Catalog-Backend at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 3.9.1

Technical details

The @backstage/plugin-catalog-backend package inconsistently evaluated catalog property permissions when using value-based permission conditions as a confidentiality boundary. An authenticated attacker could exploit this logic error to access catalog entity data that permission policies should have restricted, bypassing the intended access control model.

Affected products

Backstage plugin-catalog-backend prior to 3.9.1

Timeline

2026-10-06: disclosed
2026-08-27: patched: Fix commit merged; v1.54.6 release includes improvements to property permissions

References

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