GHSA-99j8-wv67-4c72

Source

https://github.com/advisories/GHSA-99j8-wv67-4c72

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-99j8-wv67-4c72/GHSA-99j8-wv67-4c72.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-99j8-wv67-4c72

Aliases

CVE-2026-39961

Published

2026-04-10T17:22:00Z

Modified

2026-04-10T17:33:55.581600Z

Severity

6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N CVSS Calculator

Summary

Aiven Operator has cross-namespace secret exfiltration via ClickhouseUser connInfoSecretSource

Details

Impact

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.

Patches

This vulnerability is resolved in version 0.37.0. We recommend all users update as soon as possible.

Credits

Credits to Andrés Cruciani for finding and reporting the bug through our bug bounty program

Database specific

{
    "cwe_ids": [
        "CWE-269",
        "CWE-441"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-10T17:22:00Z",
    "nvd_published_at": "2026-04-09T18:17:02Z",
    "severity": "MODERATE"
}

References

Affected packages

Go / github.com/aiven/aiven-operator

Package

Name: github.com/aiven/aiven-operator; View open source insights on deps.dev
Purl: pkg:golang/github.com/aiven/aiven-operator

Affected ranges

Type: SEMVER
Events: Introduced

0.31.0

Fixed

0.37.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-99j8-wv67-4c72/GHSA-99j8-wv67-4c72.json"