Is there a public exploit for CVE-2026-123372?

No public exploit for CVE-2026-123372 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-2026-123372?

CVE-2026-123372 scores CVSS 2.3 (v4.0), rated low.

What does CVE-2026-123372 affect?

CVE-2026-123372 affects compose-lint, tmatens/compose-lint.

2.3 Low

compose-lint: A pull request can make compose-lint quote a secret from a CI-generated `.env` into its findings

CVE-2026-123372

Impact Since 0.22.0, compose-lint fills in ${VAR} references from the .env beside the Compose file, as Compose does. The documentation says values under environment: are never resolved from a .env, "that is where secrets live". But image: values are resolved, and CL-0004 and CL-0019 quote the resolved image in their message and fix text. Some CI workflows write secrets into that .env before linting or building. In such a workflow, a pull request that changes one line to image: "${DBPASSWORD}", or image: "nginx:${DBPASSWORD}", gets the secret's value quoted in a finding. The finding reaches the job log, JSON output, and the SARIF uploaded to Code Scanning. GitHub masks registered secrets in the job log, but not in uploaded JSON or SARIF artifacts or in Code Scanning alert text. The pass/fail result is not affected. This needs a workflow that writes secrets into the .env beside the Compose file and runs on pull requests from authors who should not see them. Pull requests from forks normally run without secrets, so the common setup is not exposed, which is why this is scored as low confidentiality impact. Where the conditions hold, such as a pullrequesttarget workflow, pull requests…

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: 10 November 2026
Last updated: 10 November 2026
Affected: compose-lint · tmatens/compose-lint
Weakness: CWE-200, CWE-532

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

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