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Vulnerability record · CVE-2023-40029 · published 7 September 2023

CVE-2023-40029: Argoproj argo cd information exposure vulnerability

Argoproj · Argo Cd

Argo CD is a declarative continuous deployment for Kubernetes. Argo CD Cluster secrets might be managed declaratively using Argo CD / kubectl apply. As a result, the full secret body is stored in`kubectl.kubernetes.io/last-applied-configuration` annotation. pull request #7139 introduced the ability to manage cluster labels and annotations. Since clusters are stored as secrets it also exposes the `kubectl.kubernetes.io/last-applied-configuration` annotation which includes full secret body. In order to view the cluster annotations via the Argo CD API, the user must have `clusters, get` RBAC access. **Note:** In many cases, cluster secrets do not contain any actually-secret information. But sometimes, as in bearer-token auth, the contents might be very sensitive. The bug has been patched in versions 2.8.3, 2.7.14, and 2.6.15. Users are advised to upgrade. Users unable to upgrade should update/deploy cluster secret with `server-side-apply` flag which does not use or rely on `kubectl.kubernetes.io/last-applied-configuration` annotation. Note: annotation for existing secrets will require manual removal.

9.6 CVSS 3.1 Critical EPSS 1.2% · top 33.1% CWE-200 · Information exposureCWE-532 · Sensitive information in log file
9.6CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Argo CD is a declarative continuous deployment for Kubernetes. Argo CD Cluster secrets might be managed declaratively using Argo CD / kubectl apply. As a result, the full secret body is stored in`kubectl.kubernetes.io/last-applied-configuration` annotation. pull request #7139 introduced the ability to manage cluster labels and annotations. Since clusters are stored as secrets it also exposes the `kubectl.kubernetes.io/last-applied-configuration` annotation which includes full secret body. In order to view the cluster annotations via the Argo CD API, the user must have `clusters, get` RBAC access. **Note:** In many cases, cluster secrets do not contain any actually-secret information. But sometimes, as in bearer-token auth, the contents might be very sensitive. The bug has been patched in versions 2.8.3, 2.7.14, and 2.6.15. Users are advised to upgrade. Users unable to upgrade should update/deploy cluster secret with `server-side-apply` flag which does not use or rely on `kubectl.kubernetes.io/last-applied-configuration` annotation. Note: annotation for existing secrets will require manual removal.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/argoproj/argo-cd/commit/4b2e5b06bff2ffd8ed1970654ddd8e55fc4a41c4 Patch
https://github.com/argoproj/argo-cd/pull/7139 PatchVendor Advisory
https://github.com/argoproj/argo-cd/security/advisories/GHSA-fwr2-64vr-xv9m ExploitVendor Advisory
https://github.com/argoproj/argo-cd/commit/4b2e5b06bff2ffd8ed1970654ddd8e55fc4a41c4 Patch
https://github.com/argoproj/argo-cd/pull/7139 PatchVendor Advisory
https://github.com/argoproj/argo-cd/security/advisories/GHSA-fwr2-64vr-xv9m ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-40029), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.