---
id: "CVE-2026-123369"
page: "https://infrastack.ai/live/CVE-2026-123369"
kind: "vulnerability"
aliases: ["CVE-2026-123369"]
title: "compose-lint: CI log output lets pull requests inject workflow commands"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["azure-pipelines", "ci", "compose-lint", "docker-compose", "github-actions", "package"]
not_affected_if: ["local-only-use", "no-pr-ci-runs", "trusted-input-only"]
published_at: "2026-11-09T18:17:25+00:00"
first_seen_at: "2026-11-09T18:27:55+00:00"
updated_at: "2026-11-09T18:29:21+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123369", "first_seen_at": "2026-11-09T18:27:55+00:00"}]
exploit_sources: []
---

# compose-lint: CI log output lets pull requests inject workflow commands

Link for people: https://infrastack.ai/live/CVE-2026-123369 (this .md is for agents)

compose-lint prints attacker-controlled Compose text, such as service names and environment keys, without neutralizing GitHub Actions and Azure Pipelines workflow-command syntax. A pull request can make CI annotations, hide log sections, mask strings or trigger runner commands in the text report.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed compose-lint version with `compose-lint --version` or the package manifest.
- Look for CI workflows that run compose-lint on pull requests and print its text report to GitHub Actions or Azure Pipelines logs.

## Fix

- compose-lint: move to `0.31.0` or later.

## Timeline

- 2026-11-09T18:27:55+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123369

## Documents

- [advisory] Vendor advisory: github.com https://github.com/tmatens/compose-lint/security/advisories/GHSA-6f4g-xm8v-pgv6
- [fix] Patch: github.com https://github.com/tmatens/compose-lint/commit/672bd11145621f787c295fb11f3a859cdec1b38d
- [fix] Release notes: github.com https://github.com/tmatens/compose-lint/releases/tag/v0.31.0

## From the sources

compose-lint is a Docker Compose security linter that identifies dangerous misconfigurations before deployment. Prior to 0.31.0, compose-lint prints attacker-controlled service names, environment keys, file lines, and other Compose text without neutralizing GitHub Actions and Azure Pipelines workflow-command openers. When a workflow processes a pull request, legacy ##[ commands or a line-leading double-colon command can create false annotations, hide log regions, mask selected strings, or invoke other commands recognized by the runner. The affected text report paths do not alter the compose-lint exit code or pass or fail result, but they can misrepresent the CI output presented to reviewers. This issue is fixed in version 0.31.0.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_