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CVE-2026-125125— compose-lint: A symlink in a pull request can issue workflow commands through the compose-lint Action's SARIF-directory error message

Quick assessment

Affected
tmatens compose-lint
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

compose-lint 是一款用于 Docker Compose 的安全检查工具，可在部署前识别危险配置。在版本 0.30.0 至 0.32.0 期间，compose-lint GitHub Action 在尝试创建 SARIF 文件的子目录失败时，会输出解析后的目录路径，且未对命令进行有效抑制。具体而言：版本 0.30.0 没有设置命令停止窗口；版本 0.31.0 则在该停止窗口之外输出了此错误信息。攻击者可通过拉取请求（Pull Request）在该路径上提交一个符号链接，该链接指向一个名称包含换行符及后续工

CVSS 2.3 · Low

Affected Version Matrix 1

VendorProduct Version RangeStatus
tmatens compose-lint >= 0.30.0, < 0.32.0 affected
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I. Basic Information for CVE-2026-125125

Vulnerability Information
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Vulnerability Title
compose-lint: A symlink in a pull request can issue workflow commands through the compose-lint Action's SARIF-directory error message
Source: CVE Program / CVE List V5
Vulnerability Description
compose-lint is a Docker Compose security linter that identifies dangerous misconfigurations before deployment. From version 0.30.0 until 0.32.0, the compose-lint GitHub Action prints the resolved directory from a failed sarif-file subdirectory creation without effective command suppression. Version 0.30.0 has no stop-commands window, while version 0.31.0 prints this error outside its stop-commands window. A pull request can place a committed symlink on that path to a directory whose name contains a newline followed by a workflow command, causing the SARIF-directory error to issue commands in the job log. Only the Action with sarif-file pointing into a subdirectory is affected; a workspace-root SARIF file, the compose-lint package, the pre-commit hook, and the Docker image do not expose this message. This issue is fixed in version 0.32.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
日志输出的转义处理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
tmatens compose-lint >= 0.30.0, < 0.32.0 -

II. Public POCs for CVE-2026-125125

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III. Intelligence Information for CVE-2026-125125

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Patches & Fixes for CVE-2026-125125 (1)

Vendor Advisories for CVE-2026-125125 (1)

Vendor Pages for CVE-2026-125125 (1)

Same Patch Batch · tmatens · 2026-11-10 · 5 CVEs total

CVE-2026-125121 5.3 MEDIUM compose-lint: Text in a pull request can still issue CI workflow commands through compose-
CVE-2026-125124 2.3 LOW compose-lint: Text in a pull request can reach Azure Pipelines as logging commands through
CVE-2026-125123 2.3 LOW compose-lint: A file path in a pull request can issue CI workflow commands through compose
CVE-2026-125122 2.3 LOW compose-lint: Text in a pull request can issue CI workflow commands through compose-lint 0

IV. Related Vulnerabilities

Same product: compose-lint
Same vendor: tmatens
Same weakness: CWE-117