Detections
Analytics

SCA: security update for @backstage/plugin-kubernetes-backend (GHSA-h53x-hjx6-25gr)

low Tenable Self-Hosted Container Security Plugin ID 473658

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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-cluster identity, potentially exposing Kubernetes resources readable by that
 identity. The credential is used only with the local in-cluster API endpoint and is not sent to the
 catalog-supplied endpoint. This issue is fixed in version 0.21.10. (CVE-2026-106487)

Solution

Update the @backstage/plugin-kubernetes-backend library and its related packages to version 0.21.10 or later.

See Also

https://github.com/advisories/GHSA-h53x-hjx6-25gr

Plugin Details

Severity: Low

ID: 473658

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/7/2026

Updated: 10/7/2026

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:N/AC:H/Au:S/C:P/I:N/A:N

CVSS Score Source: CVE-2026-106487

CVSS v3

Risk Factor: Low

Base Score: 3.5

Temporal Score: 3.1

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/7/2026

Vulnerability Publication Date: 10/6/2026

Reference Information

CVE: CVE-2026-106487

cwe: CWE-441