Is there a public exploit for CVE-2026-123373?

No public exploit for CVE-2026-123373 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-123373?

CVE-2026-123373 scores CVSS 2.3 (v4.0), rated low.

What does CVE-2026-123373 affect?

CVE-2026-123373 affects tmatens compose-lint.

2.3 Low

compose-lint is a Docker Compose security linter that identifies dangerous misconfigurations before deployment.

CVE-2026-123373

compose-lint is a Docker Compose security linter that identifies dangerous misconfigurations before deployment. From 0.2.0 until 0.25.0, compose-lint follows a project-controlled symbolic link used as the Compose file outside the project. The same issue affects compose.override.yml and a COMPOSEFILE entry from 0.22.0, and an envfile target from 0.23.0. If an external Compose-related target fails YAML parsing, the error quotes an attacker-uncontrolled line into standard error, JSON errors, and SARIF notifications, while an external envfile can expose credential-like key names through CL-0020 and CL-0021 findings. The attacker selects the target path but not the exact parser-failure line, values from envfile are not printed, and the pass or fail result is unchanged. This issue is fixed in version 0.25.0.

Assessment

CVSS: 2.3 (v4.0)
Severity: Low
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 9 November 2026
Last updated: 9 November 2026
Affected: tmatens · compose-lint
Assigner: GitHub_M

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

At the source

EUVD (ENISA)

References

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