CVE-2026-55797 Argo CD repo-server command injection via crafted SSH repository SOCKS5 proxy URL
Attackers with repository creation privileges can execute arbitrary commands on the Argo CD repo-server via crafted SSH proxy URLs, accessing sensitive credentials.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-55797?
CVE-2026-55797 is a high-severity command injection vulnerability in argoproj argo-cd, published on 9 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-55797?
14 open source packages ship an affected version, including github.com/argoproj/argo-cd/v3, argo-cd and github.com/argoproj/argo-cd.
| Package | Affected | Fixed in |
|---|---|---|
github.com/argoproj/argo-cd/v3 Go | From 3.0.0 | 3.3.15, 3.4.10, 3.5.4, 3.6.0-rc2 |
github.com/argoproj/argo-cd/v3 Go | From 3.0.0 | 3.3.15 |
github.com/argoproj/argo-cd/v3 Go | From 3.0.0 | 3.3.15 |
github.com/argoproj/argo-cd/v3 Go | From 3.4.0 | 3.4.10 |
github.com/argoproj/argo-cd/v3 Go | From 3.4.0 | 3.4.10 |
github.com/argoproj/argo-cd/v3 Go | From 3.5.0 | 3.5.4 |
8 more packages
github.com/argoproj/argo-cd/v3 Go | From 3.5.0 | 3.5.4 |
github.com/argoproj/argo-cd/v3 Go | From 3.6.0-rc1 | 3.6.0-rc2 |
github.com/argoproj/argo-cd/v3 Go | From 3.6.0-rc1 | 3.6.0-rc2 |
argo-cd Bitnami | From 2.11.0 | 3.3.15, 3.4.10, 3.5.4 |
github.com/argoproj/argo-cd Go | All versions | None |
github.com/argoproj/argo-cd/v2 Go | From 2.11.0 | None |
github.com/argoproj/argo-cd/v2 Go | From 2.11.0 to 2.14.21 | None |
github.com/argoproj/argo-cd/v2 Go | From 2.11.0 to 2.14.21 | None |
How do I fix CVE-2026-55797?
Upgrade github.com/argoproj/argo-cd/v3 to a fixed version for your release line: 3.3.15, 3.4.10, 3.5.4 or 3.6.0-rc2.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-55797 being exploited?
There is no known exploitation of CVE-2026-55797 in the wild and no public exploit code.
Sources
Also known as BIT-argo-cd-2026-55797, ECHO-0f21-d53c-3d4a, GHSA-j6cw-g6p4-7hch, GO-2026-6701, MINI-29jg-v5w8-mpgv, MINI-3m5p-6hvh-757j and 22 more.