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High severity · published Oct 9, 2026
CVE-2026-55797
Argo CD repo-server command injection via crafted SSH repository SOCKS5 proxy URL
8.8
CVSS
1.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
argo-cd · argoproj
>= 2.11.0, <= 2.14.21; >= 3.0.0, < 3.3.15; >= 3.4.0, < 3.4.10; >= 3.5.0, < 3.5.4; = 3.6.0-rc1 · source: vendor
Affected product
AR
argo-cd
argoproj
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55797
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55797
x_refsource_CONFIRM
https://github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch
x_refsource_MISC
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
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