CVE-2026-42880 POC (Proof-of-Concept)

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.

Published: 2026-05-07

CVSS: 9.6

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

Download CVE-2026-42880 POC (Proof-of-Concept) here:

http://zeroday6mns52t72y3rsle7f72wca5uwn2xzktdysf72flozx7sv4mqd.onion/exploit-for-cve-2026-42880.776/

Tip: Download official Tor Browser at https://www.torproject.org/download/ to access .onion links.

https://hokyo.gr/poc-527-cve-2026-43274/

https://hokyo.gr/poc-804-cve-2026-8130/