CVE-2026-39961

Katalog CVE

CVSS 4.9 · Medium EPSS 0,48%

Kerentanan Improper Privilege Management pada aiven operator. Skor CVSS 3.1 4.9 (Medium) menurut NVD.

Deskripsi (NVD)

Aiven Operator allows you to provision and manage Aiven Services from your Kubernetes cluster. From 0.31.0 to before 0.37.0, a developer with create permission on ClickhouseUser CRDs in their own namespace can exfiltrate secrets from any other namespace — production database credentials, API keys, service tokens — with a single kubectl apply. The operator reads the victim's secret using its ClusterRole and writes the password into a new secret in the attacker's namespace. The operator acts as a confused deputy: its ServiceAccount has cluster-wide secret read/write (aiven-operator-role ClusterRole), and it trusts user-supplied namespace values in spec.connInfoSecretSource.namespace without validation. No admission webhook enforces this boundary — the ServiceUser webhook returns nil, and no ClickhouseUser webhook exists. This vulnerability is fixed in 0.37.0.

Rincian

Terbit di NVD

9 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

4.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-269: Improper Privilege Management
CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')

EPSS (30 hari)

0,48% peluang dieksploitasi; lebih tinggi dari 39,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/aiven/aiven-operator/security/advisories/GHSA-99j8-wv67-4c72 advisory vendor
• https://github.com/aiven/aiven-operator/commit/032c9ba63257fdd2fddfb7f73f71830e371ff182 patch
• https://github.com/aiven/aiven-operator/releases/tag/v0.37.0 product · release notes