Is CVE-2026-106492 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-106492 being exploited in the wild.

How severe is CVE-2026-106492?

High severity, with a CVSS score of 7.6, published 6 October 2026.

Which products and versions are affected?

Backstage @Backstage/Backend-Defaults before 0.16.1 and 0.17.8; @backstage/backend-defaults (npm) < 0.17.8, SEMVER:introduced=0,fixed=0.17.8.

Is there a fix for CVE-2026-106492?

Yes. @backstage/backend-defaults (npm): upgrade to 0.17.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-106492 attacked?

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

Am I affected by CVE-2026-106492?

Check whether you run Backstage @Backstage/Backend-Defaults or @backstage/backend-defaults (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-2026-106492: Backstage backend-defaults service credential delegation bypass

Q: Is there a fix for CVE-2026-106492?

Yes. @backstage/backend-defaults (npm): upgrade to 0.17.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-106492 attacked?

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

Q: Am I affected by CVE-2026-106492?

Check whether you run Backstage @Backstage/Backend-Defaults or @backstage/backend-defaults (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-2026-106492 · Severity: high · CVSS 7.6 · Published 2026-10-06

Backstage is an open framework for building developer portals that organizations use to manage internal services and integrations. A vulnerability in its service credential handling allows restricted service credentials to bypass access controls through plugin delegation paths, potentially allowing a read-only service to perform write operations it was not authorized for.

Technologies: Backstage @Backstage/Backend-Defaults, @backstage/backend-defaults (npm). Vendors: Backstage, npm.

Quick answers

Is CVE-2026-106492 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-106492 being exploited in the wild.
How severe is CVE-2026-106492?: High severity, with a CVSS score of 7.6, published 6 October 2026.
Which products and versions are affected?: Backstage @Backstage/Backend-Defaults before 0.16.1 and 0.17.8; @backstage/backend-defaults (npm) < 0.17.8, SEMVER:introduced=0,fixed=0.17.8.
Is there a fix for CVE-2026-106492?: Yes. @backstage/backend-defaults (npm): upgrade to 0.17.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-106492 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-106492?: Check whether you run Backstage @Backstage/Backend-Defaults or @backstage/backend-defaults (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/backend-defaults (npm): upgrade to 0.17.8 or later
```
npm install @backstage/backend-defaults@0.17.8
```

Technical details

The @backstage/backend-defaults package fails to preserve access restrictions during service credential delegation between plugins. An attacker with a restricted service credential can bypass those restrictions by routing requests through plugin-to-plugin delegation paths, gaining unauthorized access to perform operations beyond the credential's intended scope. The vulnerability requires control of a service credential with defined access restrictions.

Affected products

Backstage @backstage/backend-defaults before 0.16.1 and 0.17.8

Identifiers

CVE-2026-106492
GHSA-cq7v-rfgc-5c7v

Timeline

2026-10-06: disclosed

References

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