Argo CD: Command injection in repo-server via SSH repository proxy URL
Summary
Argo CD contains a command injection in the repo-server in the versions listed below. When an SSH Git repository is configured with a SOCKS5 proxy URL, the proxy host and port are passed unescaped to a shell command (SSH ProxyCommand). An attacker who can create or update a repository or repository credential template can run commands in the repo-server and read the Git, Helm and OCI credentials stored there. Unauthenticated attackers cannot exploit this directly.
Affected
- Argo CD 2.11.0 to 2.14.21
- Argo CD 3.0.0 to below 3.3.15
- Argo CD 3.4.0 to below 3.4.10
- Argo CD 3.5.0 to below 3.5.4
- Argo CD 3.6.0-rc1
Fixed in
- 3.3.15
- 3.4.10
- 3.5.4
- 3.6.0-rc2
According to the vendor advisory, 2.x and 3.0 to 3.2 receive no patch and must be upgraded to a fixed release line.
Workaround
- Do not set a proxy on SSH repositories or on credential templates that match SSH repositories.
- Restrict who can create or edit repositories, repository secrets and credential templates (RBAC).
- Review existing repositories for proxy settings on SSH repositories.
Exploitation
- CISA SSVC assessment: exploitation none, not automatable.
- No evidence of exploitation in the wild was found; CISA KEV status was not verified.
- No public proof of concept was identified.
Our recommendation
- Identify all Argo CD instances and their versions.
- Upgrade to a fixed release of your minor line (3.3.15, 3.4.10, 3.5.4, 3.6.0-rc2 or later). Move 2.x and 3.0 to 3.2 installations to a supported, fixed version.
- Until patched, remove proxy settings from SSH repositories and matching credential templates.
- Limit repository and credential management to trusted administrators, and rotate Git, Helm and OCI credentials if misuse is suspected.
- Upgrade the whole Argo CD installation, as the same release line contains other fixes.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- GitHub Security Advisory GHSA-j6cw-g6p4-7hch github.com
- Fix commit 1e3ddd0 (command injection via SSH proxy handling) github.com
- Commit 9b27aeb (SOCKS5 proxy support for SSH Git URLs) github.com
- Pull request 15864 github.com
- Argo CD v3.3.15 release github.com
- Argo CD v3.4.10 release github.com
- Argo CD v3.5.4 release github.com
- Argo CD v3.6.0-rc2 release github.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 20:51.
Original description (NVD)
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.
NVD references (8)
- https://github.com/argoproj/argo-cd/commit/1e3ddd0b7250aa23f489956b5fab8c13d0493a9f
- https://github.com/argoproj/argo-cd/commit/9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205
- https://github.com/argoproj/argo-cd/pull/15864
- https://github.com/argoproj/argo-cd/releases/tag/v3.3.15
- https://github.com/argoproj/argo-cd/releases/tag/v3.4.10
- https://github.com/argoproj/argo-cd/releases/tag/v3.5.4
- https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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