Vulnerability · Published Oct 9, 2026 · Assigned by GitHub_M
CVE-2026-55797Argo CD repo-server command injection via crafted SSH repository SOCKS5 proxy URL
High 8.8
In plain English
A high-severity OS command injection in argo-cd from argoproj. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 79% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/argoproj/argo-cd | no fix listed | GO-2026-6701 |
| Go | github.com/argoproj/argo-cd/v2 | no fix listed | GO-2026-6701 |
| Go | github.com/argoproj/argo-cd/v2 | no fix listed | GHSA-j6cw-g6p4-7hch |
| Go | github.com/argoproj/argo-cd/v3 | 3.5.4 | GHSA-j6cw-g6p4-7hch |
| Go | github.com/argoproj/argo-cd/v3 | 3.6.0-rc2 | GHSA-j6cw-g6p4-7hch |
| Go | github.com/argoproj/argo-cd/v3 | 3.3.15, 3.4.10, 3.5.4, 3.6.0-rc2 | GO-2026-6701 |
| Go | github.com/argoproj/argo-cd/v3 | 3.3.15 | GHSA-j6cw-g6p4-7hch |
| Go | github.com/argoproj/argo-cd/v3 | 3.4.10 | GHSA-j6cw-g6p4-7hch |
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch x_refsource_CONFIRM
- https://github.com/argoproj/argo-cd/pull/15864 x_refsource_MISC
- https://github.com/argoproj/argo-cd/commit/1e3ddd0b7250aa23f489956b5fab8c13d0493a9f x_refsource_MISC
- https://github.com/argoproj/argo-cd/commit/9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205 x_refsource_MISC
- https://github.com/argoproj/argo-cd/releases/tag/v3.3.15 x_refsource_MISC
- https://github.com/argoproj/argo-cd/releases/tag/v3.4.10 x_refsource_MISC
- https://github.com/argoproj/argo-cd/releases/tag/v3.5.4 x_refsource_MISC
- https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2 x_refsource_MISC