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CVE-2026-73667 high CVSS 8.8

OS Command Injection in github.com/openchoreo/openchoreo (CVE-2026-73667)

Summary

OS command injection in github.com/openchoreo/openchoreo (CVE-2026-73667). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 1.2.0-rc.2 or later.

Original description

The description as published by the source.

Summary

OpenChoreo Workflow Plane templates were vulnerable to OS command injection because some developer-controlled workflow parameters were interpolated directly into shell program text executed through sh -c.

An authenticated user with permission to configure and trigger an affected workflow could supply crafted parameter values containing shell metacharacters. Because Argo substituted these values directly into the shell script before execution, the values could alter the script and execute arbitrary commands inside the workflow pod.

In affected configurations, some build and publish templates used privileged Podman containers without Kubernetes pod user-namespace isolation. Consequently, injected commands could run as UID 0 inside a privileged container, with UID 0 mapped into the host user namespace. This substantially increased the potential impact of the command-injection vulnerability.

The remediation ensures that workflow parameters are treated as data rather than executable shell syntax. Affected values are now passed through container.env and consumed as quoted shell variables. JSON-derived build environment variables and build arguments are passed as separate argument-vector entries instead of being reconstructed as whitespace-delimited shell strings.

Impact

An authenticated user with permission to trigger an affected workflow could execute arbitrary commands inside the corresponding workflow pod.

Depending on the affected template and its configura…

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-73667 has been found in github.com/openchoreo/openchoreo.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: upgrade github.com/openchoreo/openchoreo to 1.2.0-rc.2 or later.
If unsure, ask your IT team or search "github.com/openchoreo/openchoreo CVE-2026-73667" on the vendor's site.

CVE-2026-73667 (github.com/openchoreo/openchoreo) — CWE-78 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
Patched: 1.2.0-rc.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

OS command injection (CWE-78) exists in github.com/openchoreo/openchoreo.

📍 Affected scope

Check the vendor advisory for the affected versions of github.com/openchoreo/openchoreo.

🔥 Severity

Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to 1.2.0-rc.2.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/openchoreo/openchoreo' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'github.com/openchoreo/openchoreo' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で github.com/openchoreo/openchoreo を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade github.com/openchoreo/openchoreo to 1.2.0-rc.2

    ステージング環境で 1.2.0-rc.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

go github.com/openchoreo/openchoreo
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-rc.2"}]}]

References

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