compose-lint is a Docker Compose security linter that identifies dangerous misconfigurations before deployment. From 0.2.0 until 0.32.0, compose-lint automatically follows a .compose-lint.yml policy-file symbolic link outside the project and includes part of the target line when that external file fails YAML parsing. A pull request can point the policy file at a runner credential file, causing about 30 characters around an attacker-uncontrolled parse position to appear in standard error, JSON errors, and SARIF tool execution notifications uploaded by the GitHub Action. The run exits with an error and the attacker cannot select the exact disclosed line, but public logs or Code Scanning output can reveal part of the target. This issue is fixed in version 0.32.0.
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History

Mon, 09 Nov 2026 17:45:00 +0000

Type Values Removed Values Added
Description compose-lint is a Docker Compose security linter that identifies dangerous misconfigurations before deployment. From 0.2.0 until 0.32.0, compose-lint automatically follows a .compose-lint.yml policy-file symbolic link outside the project and includes part of the target line when that external file fails YAML parsing. A pull request can point the policy file at a runner credential file, causing about 30 characters around an attacker-uncontrolled parse position to appear in standard error, JSON errors, and SARIF tool execution notifications uploaded by the GitHub Action. The run exits with an error and the attacker cannot select the exact disclosed line, but public logs or Code Scanning output can reveal part of the target. This issue is fixed in version 0.32.0.
Title compose-lint: A `.compose-lint.yml` symlinked outside the project is read, and a parse error quotes part of the target
Weaknesses CWE-209
CWE-59
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-11-09T17:36:29.552Z

Reserved: 2026-11-05T20:43:10.420Z

Link: CVE-2026-123371

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-09T18:17:26.160

Modified: 2026-11-09T18:17:26.160

Link: CVE-2026-123371

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-09T18:30:13Z

Weaknesses