CVE-2026-42880

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Source
https://cve.org/CVERecord?id=CVE-2026-42880
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42880.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-42880
Aliases
Downstream
CGA (4)
CLEANSTART (8)
MINI (14)
openSUSE (1)
Related
Published
2026-05-07T22:20:39Z
Modified
2026-10-22T10:32:01Z
Severity
  • 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
Summary
ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-200",
        "CWE-212"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42880.json"
}
References

Affected packages

Git / github.com/argoproj/argo-cd

Affected ranges

Type
GIT
Repo
https://github.com/argoproj/argo-cd
Events
Introduced
66b2f302d91a42cc151808da0eec0846bbe1062c
Fixed
6d66c1b29e4f25dccfb5b0c7a939785b0071ef9a
Introduced
fd6b7d5b3cba5e7aa7ad400b0fb905a81018a77b
Fixed
1b1bb48f981385cf40b282e965cf63419be3d93f
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.2.0"
                },
                {
                    "fixed": "3.2.11"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.3.0"
                },
                {
                    "fixed": "3.3.9"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Affected versions

v3.*
v3.2.0
v3.2.1
v3.2.10
v3.2.2
v3.2.3
v3.2.4
v3.2.5
v3.2.6
v3.2.7
v3.2.8
v3.2.9
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.3.4
v3.3.5
v3.3.6
v3.3.7
v3.3.8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42880.json"