ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction (argoproj argo-cd)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.65 % · percentile 51 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Modified
Description
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to before 3.3.9, there is a missing authorization and data-masking gap in Argo CD's ServerSideDiff endpoint that allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server's Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9.
Weaknesses (CWE)
- CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor
- CWE-212 — Improper Removal of Sensitive Information Before Storage or Transfer
- CWE-201 — Insertion of Sensitive Information Into Sent Data
References
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3
- https://access.redhat.com/security/cve/CVE-2026-42880
- https://bugzilla.redhat.com/show_bug.cgi?id=2467882
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42880.json
- https://access.redhat.com/errata/RHSA-2026:20943
- https://access.redhat.com/errata/RHSA-2026:20947
- https://access.redhat.com/errata/RHBA-2026:12433
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N | GitHub_M |
| CVSS 3.1 | HIGH 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N | redhat-SADP |
| CVSS 3.1 | CRITICAL 9.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | HIGH 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Advisories
- GHSA-3v3m-wc6v-x4x3 — ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction
- GO-2026-5099 — ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction in github.com/argoproj/argo-cd
European references
- ENISA EUVD · EUVD-2026-28469
- GCVE · GCVE-0-2026-42880
Affected configurations (NVD CPE)
cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*≥ 3.2.0 < 3.2.11cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*≥ 3.3.0 < 3.3.9
Affected products
| Product | Versions |
|---|---|
| argoproj · argo-cd | affected >= 3.2.0, < 3.2.11 ; affected >= 3.3.0, < 3.3.9 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |