Security Vulnerability in Docker Compose Linter by Tmatens
CVE-2026-123371

2.3LOW

Key Information:

Vendor

Tmatens

Status
Compose-lint
Vendor
CVE Published:
9 November 2026

What is CVE-2026-123371?

A security misconfiguration vulnerability in the compose-lint tool allows an attacker to influence the parsing of a YAML policy file by leveraging symbolic links. When an external .compose-lint.yml file fails to parse correctly, it exposes sensitive details in logs, JSON errors, and notifications. This could inadvertently disclose information about the runner credential file, leading to potential security risks. The issue has been addressed in version 0.32.0, which mitigates the risk of exposing sensitive information.

Affected Version(s)

compose-lint >= 0.2.0, < 0.32.0

References

https://github.com/tmatens/compose-lint/security/advisori...
x_refsource_CONFIRM
https://github.com/tmatens/compose-lint/pull/943
x_refsource_MISC
https://github.com/tmatens/compose-lint/commit/e80547d33b...
x_refsource_MISC

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.