Is CVE-2026-106461 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-106461 being exploited in the wild.

How severe is CVE-2026-106461?

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

Which products and versions are affected?

Backstage @Backstage/Plugin-Scaffolder-Backend prior to 4.1.0; @backstage/plugin-scaffolder-backend (npm) < 4.1.0, SEMVER:introduced=0,fixed=4.1.0.

Is there a fix for CVE-2026-106461?

Yes. @backstage/plugin-scaffolder-backend (npm): upgrade to 4.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-106461 attacked?

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

Am I affected by CVE-2026-106461?

Check whether you run Backstage @Backstage/Plugin-Scaffolder-Backend or @backstage/plugin-scaffolder-backend (npm) 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-2026-106461: Backstage scaffolder-backend task visibility privilege escalation

Q: Is there a fix for CVE-2026-106461?

Yes. @backstage/plugin-scaffolder-backend (npm): upgrade to 4.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-106461 attacked?

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

Q: Am I affected by CVE-2026-106461?

Check whether you run Backstage @Backstage/Plugin-Scaffolder-Backend or @backstage/plugin-scaffolder-backend (npm) 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-2026-106461 · Severity: medium · CVSS 4.3 · Published 2026-10-06

Backstage is an open framework for building internal developer portals used by engineering teams. An authenticated user with limited permissions could view metadata about scaffolder tasks they shouldn't have access to, potentially revealing information about automation workflows and deployments across the organization. Sensitive task secrets are not exposed, but this could aid in reconnaissance for further attacks.

Technologies: Backstage @Backstage/Plugin-Scaffolder-Backend, @backstage/plugin-scaffolder-backend (npm). Vendors: Backstage, npm.

Quick answers

Is CVE-2026-106461 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-106461 being exploited in the wild.
How severe is CVE-2026-106461?: Medium severity, with a CVSS score of 4.3, published 6 October 2026.
Which products and versions are affected?: Backstage @Backstage/Plugin-Scaffolder-Backend prior to 4.1.0; @backstage/plugin-scaffolder-backend (npm) < 4.1.0, SEMVER:introduced=0,fixed=4.1.0.
Is there a fix for CVE-2026-106461?: Yes. @backstage/plugin-scaffolder-backend (npm): upgrade to 4.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-106461 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-106461?: Check whether you run Backstage @Backstage/Plugin-Scaffolder-Backend or @backstage/plugin-scaffolder-backend (npm) 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

@backstage/plugin-scaffolder-backend (npm): upgrade to 4.1.0 or later
```
npm install @backstage/plugin-scaffolder-backend@4.1.0
```

Technical details

The @backstage/plugin-scaffolder-backend package has an incorrect authorization check in the task listing endpoint, allowing authenticated users to bypass visibility restrictions defined by the deployment's permission policy. This is a broken access control vulnerability affecting the scaffolder service's task metadata endpoint. The fix, merged in commit 0253c50, enforces proper permission evaluation on task read operations.

Affected products

Backstage @backstage/plugin-scaffolder-backend prior to 4.1.0

Identifiers

CVE-2026-106461
GHSA-7hfw-grcm-cqm6

Timeline

2026-10-06: disclosed
2026-08-28: patched: Released in v1.54.6 and fixed in 4.1.0

References

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