CVE-2026-106487: Backstage is an open framework for building developer portals

Q: How do I fix CVE-2026-106487?

backstage\/plugin-kubernetes-backend: upgrade to 0.21.10; backstage: upgrade to 1.54.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-106487 being exploited?

CVE-2026-106487 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-106487 affect?

CVE-2026-106487 affects backstage\/plugin-kubernetes-backend, backstage. Severity is low (CVSS 3.5). Backstage is an open framework for building developer portals. Prior to 0.21.10, the @backstage/plugin-kubernetes-backend package is affected by unsupported catalog cluster authentication mode in kubernetes backend. Deployments using catalo

Q: How urgent is CVE-2026-106487?

Priority 22/100. On your watchlist

Routine

LOW 3.5WATCHLISTUPGRADEUPGRADE

CVE-2026-106487 is a low-severity flaw (CVSS 3.5) affecting backstage\/plugin-kubernetes-backend, backstage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Backstage is an open framework for building developer portals. Prior to 0.21.10, the @backstage/plugin-kubernetes-backend package is affected by unsupported catalog cluster authentication mode in kubernetes backend. Deployments using catalog cluster discovery may be affected when catalog contributors can create or modify kubernetes-cluster Resource entities. With the required endpoint permissions and pod RBAC, the backend can use its local in-clu

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	3.5 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-441
Published	2026-10-06
Last modified	2026-10-22

Publisher (CNA): GitHub, Inc. · Vendor: linuxfoundation

Am I affected?

Timeline

2026-10-06Published CVE record published
2026-10-22 18:49 UTCUpdated Record last modified

linuxfoundation backstage\/plugin-kubernetes-backend UPGRADE

Affected: < 0.21.10

Fixed in: 0.21.10

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls backstageplugin-kubernetes-backend

2. UPGRADE to 0.21.10

npm install backstageplugin-kubernetes-backend@">=0.21.10"

linuxfoundation backstage UPGRADE

Affected: < 1.54.6

Fixed in: 1.54.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy backstage || rpm -q backstage || backstage --version

2. UPGRADE to 1.54.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade backstage

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade backstage

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-106487?

backstage\/plugin-kubernetes-backend: upgrade to 0.21.10; backstage: upgrade to 1.54.6. Exact commands for each OS are on this page.

Is CVE-2026-106487 being exploited?

CVE-2026-106487 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-106487 affect?

CVE-2026-106487 affects backstage\/plugin-kubernetes-backend, backstage. Severity is low (CVSS 3.5). Backstage is an open framework for building developer portals. Prior to 0.21.10, the @backstage/plugin-kubernetes-backend package is affected by unsupported catalog cluster authentication mode in kubernetes backend. Deployments using catalo

How urgent is CVE-2026-106487?

Priority 22/100. On your watchlist

Software pages

Kubernetes vulnerabilities

References

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