---
title: "CVE-2026-55797: Argo CD repo-server command injection via crafted SSH repository SOCKS5 proxy URL"
url: https://erroneo.us/security/cve/CVE-2026-55797/
description: "CVE-2026-55797 (argoproj argo-cd): 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…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-10-09
date_modified: 2026-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-55797"
kev: false
cvss: 8.8
epss: 0.01548
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-55797: Argo CD repo-server command injection via crafted SSH repository SOCKS5 proxy URL

**Signal:** Normal patch cycle. No exploitation signal; fix it in your next routine update if you are affected. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.5% , percentile 75: FIRST’s model estimates a 1.5% chance of exploitation activity in the next 30 days, higher than 75% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Editorial verdict: Patch this week. Argo CD: Repo-Server RCE and AppProject Bypass (Oct 2026) — Upgrade Argo CD to a patched 3.3, 3.4 or 3.5 release this week, and today on shared instances where people you do not fully trust can push to tracked repos or merely view an Application.

## What it is

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 products (CVE record)

- argoproj argo-cd: >= 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

## Severity

- GitHub_M CVSS 3.1: 8.8 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.55% probability of exploitation activity in the next 30 days; percentile 75.

## Sources

- [CVE.org record CVE-2026-55797](https://www.cve.org/CVERecord?id=CVE-2026-55797)
- [NVD entry CVE-2026-55797](https://nvd.nist.gov/vuln/detail/CVE-2026-55797)
- [github.com](https://github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch)
- [github.com](https://github.com/argoproj/argo-cd/pull/15864)
- [github.com](https://github.com/argoproj/argo-cd/commit/1e3ddd0b7250aa23f489956b5fab8c13d0493a9f)
- [github.com](https://github.com/argoproj/argo-cd/commit/9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205)
- [github.com](https://github.com/argoproj/argo-cd/releases/tag/v3.3.15)
- [github.com](https://github.com/argoproj/argo-cd/releases/tag/v3.4.10)
- [github.com](https://github.com/argoproj/argo-cd/releases/tag/v3.5.4)
- [github.com](https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2)

---
Source page: https://erroneo.us/security/cve/CVE-2026-55797/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt