RCE in Argoproj Argo-Cd
CVE-2026-55797
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 2.11.0 until 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2, the Argo CD repo-server is vulnerable to command injection when it clones, tests, or fetches an SSH Git repository configured with a proxy URL. The proxy host and port are embedded in an SSH ProxyCommand that is executed through a shell without neutralizing shell metacharacters. A user who can create or update a repository or repository credential template can supply a crafted proxy host to execute commands in the repo-server and access its Git, Helm, and OCI credentials. This issue is fixed in versions 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Argoproj Argo-Cd — versions = 3.6.0-rc1, >= 2.11.0, <= 2.14.21, >= 3.0.0, < 3.3.15
Weakness classification (CWE)
References
- github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch
- github.com/argoproj/argo-cd/pull/15864
- github.com/argoproj/argo-cd/commit/1e3ddd0b7250aa23f489956b5fab8c13d0493a9f
- github.com/argoproj/argo-cd/commit/9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205
- github.com/argoproj/argo-cd/releases/tag/v3.3.15
- github.com/argoproj/argo-cd/releases/tag/v3.4.10
- github.com/argoproj/argo-cd/releases/tag/v3.5.4
- github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2
Frequently asked questions
- What is CVE-2026-55797?
- CVE-2026-55797 is a high-severity vulnerability in Argoproj Argo-Cd, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-10-09.
- How severe is CVE-2026-55797?
- High severity. CVSS v3 base score is 8.8 out of 10.