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SCA: security update for github.com/projectcapsule/capsule (GHSA-2ww6-hf35-mfjm)

low Tenable Cloud Security Plugin ID 442434

Description

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

 - Capsule is a multi-tenancy and policy-based framework for Kubernetes. To defend against namespace
 hijacking achieved through update/patch operations on namespaces, Capsule uses a webhook to validate
 update requests targeting namespaces. However, in Kubernetes, the namespace/finalize and namespace/status
 subresource APIs can also modify various fields of a namespace, including the metadata field. Prior to
 version 0.13.0, the webhook does not define interception rules for these subresources. As a result, if a
 tenant administrator has permission to modify namespace/status or namespace/finalize, they can
 successfully perform namespace hijacking. Version 0.13.0 fixes the issue. Another mitigation is to add two
 subresources (namespaces and snamespaces/status with namespace/finalize within it) to the resources list
 in the ValidatingWebhookConfiguration rules. (CVE-2026-30963)

Solution

Update the github.com/projectcapsule/capsule library and its related packages to version 0.13.0 or later.

See Also

https://github.com/advisories/GHSA-2ww6-hf35-mfjm

Plugin Details

Severity: Low

ID: 442434

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 5/28/2026

Updated: 7/1/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.6

Vector: CVSS2#AV:N/AC:L/Au:M/C:N/I:P/A:N

CVSS Score Source: CVE-2026-30963

CVSS v3

Risk Factor: Low

Base Score: 2.7

Temporal Score: 2.5

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/28/2026

Vulnerability Publication Date: 5/28/2026

Reference Information

CVE: CVE-2026-30963

cwe: CWE-20