CVE-2026-123372

compose-lint is a Docker Compose security linter that identifies dangerous misconfigurations before deployment. From 0.22.0 until 0.32.0, compose-lint substitutes values from a sibling .env file into image fields and quotes the resolved value in CL-0004 and CL-0019 finding messages and fix text. In a workflow that writes secrets into that file and then lints untrusted pull-request content, an attacker can reference a secret variable so its whole value reaches the job log, JSON output, SARIF artifacts, and Code Scanning alerts. Fork pull requests normally lack secrets, so exploitation requires a secret-bearing workflow such as pull_request_target, same-repository branches, or a retained .env on a self-hosted runner, and the pass or fail result is unchanged. This issue is fixed in version 0.32.0.

• https://github.com/tmatens/compose-lint/commit/977da9724789264c2662afe47f79220e915442c2
• https://github.com/tmatens/compose-lint/pull/944
• https://github.com/tmatens/compose-lint/releases/tag/v0.32.0
• https://github.com/tmatens/compose-lint/security/advisories/GHSA-jf3h-8jvx-vcrg

• https://github.com/tmatens/compose-lint/commit/977da9724789264c2662afe47f79220e915442c2
• https://github.com/tmatens/compose-lint/pull/944
• https://github.com/tmatens/compose-lint/releases/tag/v0.32.0
• https://github.com/tmatens/compose-lint/security/advisories/GHSA-jf3h-8jvx-vcrg

• MEDIUMCVE-2026-116691PoC
• UNSCOREDCVE-2026-123796PoC
• HIGHCVE-2026-54145PoC
• MEDIUMCVE-2013-10077PoC
• MEDIUMCVE-2023-54407PoC
• MEDIUMCVE-2025-13647
• HIGHCVE-2025-71423PoC
• HIGHCVE-2025-71425PoC

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