Description
KubeVela is an open source application delivery platform. Prior to 1.9.14, from 1.10.0-alpha.1 until 1.10.9, and from 1.11.0-alpha.1 until 1.11.0-alpha.4, the Terraform remote configuration loader in pkg/controller/utils/capability.go, GetTerraformConfigurationFromRemote, clones a repository supplied through a core.oam.dev/v1beta1 ComponentDefinition and follows repository-controlled variables.tf or main.tf symlinks. A user with permission to create or update ComponentDefinition objects can point variables.tf to /dev/zero through terraform.path, after which os.Stat and os.ReadFile follow the link and read an unbounded stream before ParseTerraformVariables or HCL parsing can reject the content. The read can exhaust memory, OOM-kill the cluster-wide vela-core controller, cause repeated Pod restarts, and pressure node memory when no effective container limit is configured. This issue is fixed in versions 1.9.14, 1.10.9, and 1.11.0-alpha.4.
Published: 2026-08-28
Score: 8.5 High
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service (cluster disruption)
Action: Patch
AI Analysis

Impact

The vulnerability allows a user with permission to create or update ComponentDefinition objects to supply a path that follows a symlink to /dev/zero. The loader reads the resulting unbounded stream before rejecting the content, exhausting memory and potentially triggering an out‑of‑memory kill of the cluster‑wide controller. This can cause repeated pod restarts and memory pressure on nodes, disrupting overall service availability.

Affected Systems

Affected versions are kubevela releases prior to 1.9.14, 1.10.9, and 1.11.0-alpha.4. The issue occurs in the Terraform remote configuration loader located in pkg/controller/utils/capability.go.

Risk and Exploitability

With a CVSS score of 8.5 and no EPSS score available, the vulnerability is considered high severity but the likelihood of exploitation cannot be quantified from the available data. The issue is not listed in the CISA KEV catalog. Exploitation requires legitimate permission to create or update ComponentDefinition resources, a limitation that mitigates widespread exploitation but still poses a significant risk to organizations allowing such privileges.

Generated by OpenCVE AI on August 28, 2026 at 21:01 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade to kubevela version 1.9.14, 1.10.9, or 1.11.0-alpha.4 to apply the fixed loader logic.
  • Configure controller container memory limits to protect against uncontrolled resource consumption.
  • Restrict or audit permissions for creating or updating ComponentDefinition objects to reduce the attack surface.

Generated by OpenCVE AI on August 28, 2026 at 21:01 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-fmgp-q6jx-gg3x KubeVela Terraform remote loader DoS via unbounded file read
History

Fri, 28 Aug 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 28 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Kubevela
Kubevela kubevela
Vendors & Products Kubevela
Kubevela kubevela

Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description KubeVela is an open source application delivery platform. Prior to 1.9.14, from 1.10.0-alpha.1 until 1.10.9, and from 1.11.0-alpha.1 until 1.11.0-alpha.4, the Terraform remote configuration loader in pkg/controller/utils/capability.go, GetTerraformConfigurationFromRemote, clones a repository supplied through a core.oam.dev/v1beta1 ComponentDefinition and follows repository-controlled variables.tf or main.tf symlinks. A user with permission to create or update ComponentDefinition objects can point variables.tf to /dev/zero through terraform.path, after which os.Stat and os.ReadFile follow the link and read an unbounded stream before ParseTerraformVariables or HCL parsing can reject the content. The read can exhaust memory, OOM-kill the cluster-wide vela-core controller, cause repeated Pod restarts, and pressure node memory when no effective container limit is configured. This issue is fixed in versions 1.9.14, 1.10.9, and 1.11.0-alpha.4.
Title KubeVela Terraform remote loader DoS via unbounded file read
Weaknesses CWE-400
CWE-59
References
Metrics cvssV3_1

{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H'}


Subscriptions

Kubevela Kubevela
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-08-28T20:21:47.902Z

Reserved: 2026-06-16T14:41:54.579Z

Link: CVE-2026-55108

cve-icon Vulnrichment

Updated: 2026-08-28T20:21:44.160Z

cve-icon NVD

Status : Deferred

Published: 2026-08-28T20:18:24.337

Modified: 2026-09-09T21:09:13.080

Link: CVE-2026-55108

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T21:15:03Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption

  • CWE-59

    Improper Link Resolution Before File Access ('Link Following')