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CVE-2026-55797

8.8 · HIGH

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes.

Published Oct 9, 2026CWE-78EPSS 1.87%

Overview

CVE-2026-55797 is a high-severity vulnerability. It was published on October 9, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/argoproj/argo-cd/commit/1e3ddd0b7250aa23f489956b5fab8c13d0493a9fGitHubgithub.com/argoproj/argo-cd/commit/9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205GitHubgithub.com/argoproj/argo-cd/pull/15864GitHubgithub.com/argoproj/argo-cd/releases/tag/v3.3.15GitHubgithub.com/argoproj/argo-cd/releases/tag/v3.4.10GitHubgithub.com/argoproj/argo-cd/releases/tag/v3.5.4GitHubgithub.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2GitHubgithub.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch

How CyberStrike helps

Frequently asked questions

What is CVE-2026-55797?

CVE-2026-55797 is a high-severity vulnerability. It was published on October 9, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-55797?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-55797?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-55797?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-55797 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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