CVE-2026-55797

High

Description

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.

SeverityHigh
CVSS8.8
Exploit probability—
ProductGithub.com/argoproj/argo-cd/v2
PublishedOct 9, 2026
First seenOct 9, 2026

How to fix

Update
  • github.com/argoproj/argo-cd/v33.3.15, 3.4.10, 3.5.4, 3.6.0-rc2 or later

Affected products

ProductAffected versionsFixed in
github.com/argoproj/argo-cd/v2Go2.11.0 ≤ v ≤ 2.14.21, 2.11.0 ≤ v—
github.com/argoproj/argo-cd/v3Go3.0.0 ≤ v < 3.3.15, 3.4.0 ≤ v < 3.4.10, 3.5.0 ≤ v < 3.5.4, 3.6.0-rc1 ≤ v < 3.6.0-rc23.3.15, 3.4.10, 3.5.4, 3.6.0-rc2
github.com/argoproj/argo-cdGoNo range specified—

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