CVE catalog
CVE-2026-42880
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
- Severity
- Critical · CVSS 9.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.65% · Oct 25, 2026
A flaw was found in Argo CD, a GitOps continuous delivery tool for Kubernetes. A missing authorization and data-masking gap in the ServerSideDiff endpoint allows an attacker with read-only access to extract sensitive Kubernetes Secret data. This information disclosure occurs by leveraging the Kubernetes API server's Server-Side Apply dry-run mechanism, potentially exposing critical configuration and credentials. argoproj/argo-cd: Argo CD: Information disclosure of Kubernetes Secret data via Server-Side Apply dry-run mechanism The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | argo_cd | Not reported | 3.2.11 | fixed |
| Cpe | argo_cd | Not reported | 3.3.9 | fixed |
| Cpe | argo_cd | Not reported | 3.3.9 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | argo_cd | cpe | Not reported | 3.2.11 | Not reported | Not reported | Not reported |
| Cpe | argo_cd | cpe | Not reported | 3.3.9 | Not reported | Not reported | Not reported |
| Cpe | argo_cd | cpe | Not reported | 3.3.9 | Not reported | NVD-CVE-2026-42880 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/errata/RHBA-2026:12433]
- [https://access.redhat.com/errata/RHSA-2026:20943]
- [https://access.redhat.com/errata/RHSA-2026:20947]
- [https://access.redhat.com/security/cve/CVE-2026-42880]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2467882]
- [https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-42880]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42880.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1383.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]