Bug 2548730 (CVE-2026-55797)

Summary:	CVE-2026-55797 github.com/argoproj/argo-cd/v3: github.com/argoproj/argo-cd/v2: argo-cd: Arbitrary command execution via crafted SSH repository proxy configuration
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	anjoseph, gbenhaim, jprabhak, niyer, twaugh, wtam
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in Argo CD's repository server component. An authenticated user with permissions to create or update repository configurations can supply a crafted proxy address containing special characters for an SSH (Secure Shell) repository. Because the server processes this proxy address directly through a system shell without proper sanitization, an attacker can execute arbitrary commands on the repository server and access stored credentials.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-10-09 17:02:22 UTC

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.