Public vulnerability disclosure

Open

CVE-2026-123372

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

publishedCWE-200CWE-532

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.

Technical severity2.3 lowCVSS 4.0 · CNA: GitHub_M

Published2026-11-09Source updated 2026-11-13

Collected2026-11-135 attributed sources

Fixes and workarounds

Fix

compose-lint (pip): GitHub reports patched versions 0.32.0. Check the advisory for the affected release branch.

Source: GitHub GHSA-jf3h-8jvx-vcrg

Fix

tmatens/compose-lint (actions): GitHub reports patched versions 0.32.0. Check the advisory for the affected release branch.

Source: GitHub GHSA-jf3h-8jvx-vcrg

Fix

compose-lint (PyPI): OSV reports a fixed version 0.32.0. Check the advisory for supported release branches.

Source: OSV GHSA-jf3h-8jvx-vcrg

Fix

tmatens/compose-lint (GitHub Actions): OSV reports a fixed version 0.32.0. Check the advisory for supported release branches.

Source: OSV GHSA-jf3h-8jvx-vcrg

Fix

tmatens/compose-lint: OSV reports a fix at commit 2d42617e4c6416f797bbfc6a057950131fa02df3.

Source: OSV GHSA-jf3h-8jvx-vcrg

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
compose-lint tmatens	>= 0.22.0, < 0.32.0 (affected)	CNA: GitHub_M
compose-lint `compose-lint` pip	>= 0.22.0, <= 0.31.0 (affected, GitHub advisory range)	GitHub GHSA-jf3h-8jvx-vcrg
tmatens/compose-lint `tmatens/compose-lint` actions	>= 0.22.0, <= 0.31.0 (affected, GitHub advisory range)	GitHub GHSA-jf3h-8jvx-vcrg
compose-lint `compose-lint` PyPI	0.22.0 (affected, PyPI) 0.23.0 (affected, PyPI) 0.24.0 (affected, PyPI) 0.25.0 (affected, PyPI) 0.26.0 (affected, PyPI) 0.27.0 (affected, PyPI) 0.28.0 (affected, PyPI) 0.29.0 (affected, PyPI) 0.30.0 (affected, PyPI) 0.31.0 (affected, PyPI) Ecosystem version events: introduced 0.22.0; fixed 0.32.0 Source events (ECOSYSTEM) `[ { "introduced": "0.22.0" }, { "fixed": "0.32.0" } ]` Other versions: unaffected	OSV GHSA-jf3h-8jvx-vcrg
tmatens/compose-lint `tmatens/compose-lint` GitHub Actions	v0.31.0 (affected, GitHub Actions) v0.30.0 (affected, GitHub Actions) v0.29.0 (affected, GitHub Actions) v0.28.0 (affected, GitHub Actions) v0.27.0 (affected, GitHub Actions) v0.26.0 (affected, GitHub Actions) v0.25.0 (affected, GitHub Actions) v0.24.0 (affected, GitHub Actions) v0.23.0 (affected, GitHub Actions) v0.22.0 (affected, GitHub Actions) Ecosystem version events: introduced 0.22.0; fixed 0.32.0 Source events (ECOSYSTEM) `[ { "introduced": "0.22.0" }, { "fixed": "0.32.0" } ]` Git commit history: introduced 811ef6b379dbc78d048fcedaf976205705d4a7c3; fixed 2d42617e4c6416f797bbfc6a057950131fa02df3 Source events (GIT) Commit identifiers describe source repository history. They are not release-version comparisons. `[ { "introduced": "811ef6b379dbc78d048fcedaf976205705d4a7c3" }, { "fixed": "2d42617e4c6416f797bbfc6a057950131fa02df3" } ]` Other versions: unaffected	OSV GHSA-jf3h-8jvx-vcrg

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
4.0 / 2.3 low	`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`	CNA: GitHub_M
4.0 / 2.3 low	`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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`	NVD: [email protected]

Exploit evidence

https://github.com/tmatens/compose-lint/security/advisories/GHSA-jf3h-8jvx-vcrg
exploit · ADP: CISA-ADP

References

https://github.com/tmatens/compose-lint/security/advisories/GHSA-jf3h-8jvx-vcrgCNA: GitHub_M · x_refsource_CONFIRM
https://github.com/tmatens/compose-lint/pull/944CNA: GitHub_M · x_refsource_MISC
https://github.com/tmatens/compose-lint/commit/977da9724789264c2662afe47f79220e915442c2CNA: GitHub_M · x_refsource_MISC
https://github.com/tmatens/compose-lint/releases/tag/v0.32.0CNA: GitHub_M · x_refsource_MISC
https://github.com/tmatens/compose-lint/security/advisories/GHSA-jf3h-8jvx-vcrgADP: CISA-ADP · exploit
https://github.com/tmatens/compose-lint/commit/977da9724789264c2662afe47f79220e915442c2[email protected]
https://github.com/tmatens/compose-lint/pull/944[email protected]
https://github.com/tmatens/compose-lint/releases/tag/v0.32.0[email protected]
https://github.com/tmatens/compose-lint/security/advisories/GHSA-jf3h-8jvx-vcrg[email protected]
https://github.com/tmatens/compose-lint/security/advisories/GHSA-jf3h-8jvx-vcrgGitHub Security Advisories · advisory
https://github.com/advisories/GHSA-jf3h-8jvx-vcrgOSV / GitHub Security Advisories · advisory
https://osv.dev/vulnerability/GHSA-jf3h-8jvx-vcrgOSV / GitHub Security Advisories · osv

Prioritization

CISA known exploited vulnerabilities

No KEV listing in collected sources. This does not establish that exploitation is absent.

EPSS

0.38% estimated probability of exploitation in the next 30 days; percentile 32.50.
Assessed 2026-11-12 by FIRST.

SSVC

Exploitation: poc
Automatable: no
Technical impact: partial

ADP: CISA-ADP · 2026-11-13

Provenance

CNA: GitHub_M
Source updated 2026-11-13
Retrieved 2026-11-13

NVD
Source updated 2026-11-12
Retrieved 2026-11-13

GitHub Security Advisories
Source updated 2026-11-10
Retrieved 2026-11-12

OSV / GitHub Security Advisories
Source updated 2026-11-10
Retrieved 2026-11-13

FIRST EPSS
Source updated Not reported
Retrieved 2026-11-13

Disclosure revision
190a87391b800de56f979dae882266fe9f91c6263336fc69efc5e8b07f12b60e

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