Hacking, PenTest, and Cybersecurity Tools for Your Security Arsenal!

Loading CVE intelligence

Loading vulnerability catalog

Kitploit is a directory of hacking, cybersecurity, and pentesting tools. Discover the latest project updates to find vulnerabilities, analyze systems, automate testing, and strengthen your security.

Tool Directory

CVE-2026-42880

CriticalPublished

ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction

Published: May 7, 2026
Updated: Sep 7, 2026
Assigning CNA: GitHub_M
Evidence observed: Aug 15, 2026

Primary CVSS

9.6/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

0.5%

Low · next 30 days

Percentile: 42.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

POC_CVE-2026-42880PoC
Reproduces CVE-2026-42880, a critical ArgoCD vulnerability exposing Kubernetes Secrets via ServerSideDiff. Includes automated lab setup, trigger scripts, and a Nuclei detection template for security testing.

Responsible use

Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.