CVE-2026-123369 PUBLISHED

compose-lint: Compose file text can issue GitHub Actions workflow commands through the compose-lint Action

Assigner: GitHub_M
Reserved: 05.11.2026 Published: 09.11.2026 Updated: 09.11.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
CVSS Score: 5.3

Product Status

Vendor tmatens
Product compose-lint
Versions
  • Version < 0.31.0 is affected

References

Problem Types

  • CWE-117: Improper Output Neutralization for Logs CWE
  • CWE-150: Improper Neutralization of Escape, Meta, or Control Sequences CWE