CVE-2026-25145— melange has a path traversal in license-path which allows reading files outside workspace
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I. Basic Information for CVE-2026-25145
Vulnerability Information
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Vulnerability Title
melange has a path traversal in license-path which allows reading files outside workspace
Source: NVD (National Vulnerability Database)
Vulnerability Description
melange allows users to build apk packages using declarative pipelines. From version 0.14.0 to before 0.40.3, an attacker who can influence a melange configuration file (e.g., through pull request-driven CI or build-as-a-service scenarios) could read arbitrary files from the host system. The LicensingInfos function in pkg/config/config.go reads license files specified in copyright[].license-path without validating that paths remain within the workspace directory, allowing path traversal via ../ sequences. The contents of the traversed file are embedded into the generated SBOM as license text, enabling exfiltration of sensitive data through build artifacts. This issue has been patched in version 0.40.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
melange 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
melange是Chainguard开源的一个从源代码构建APK的软件。 melange 0.14.0版本至0.40.3之前版本存在路径遍历漏洞，该漏洞源于LicensingInfos函数读取许可证文件时未验证路径，可能导致路径遍历和读取任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| chainguard-dev | melange | >= 0.14.0, < 0.40.3 | - |
II. Public POCs for CVE-2026-25145
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|---|
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- Merge commit from fork · chainguard-dev/melange@2f95c9f · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-25145
Same Patch Batch · chainguard-dev · 2026-02-04 · 7 CVEs total
| CVE-2026-24843 | 8.2 HIGH | melange QEMU runner could write files outside workspace directory |
| CVE-2026-25143 | 7.8 HIGH | melange affected by potential host command execution via license-check YAML mode patch pip |
| CVE-2026-24844 | 7.8 HIGH | melange pipeline working-directory could allow command injection |
| CVE-2026-25121 | 7.5 HIGH | apko is vulnerable to path traversal in apko dirFS which allows filesystem writes outside |
| CVE-2026-25140 | 7.5 HIGH | apko affected by potential unbounded resource consumption in expandapk.ExpandApk on attack |
| CVE-2026-25122 | 5.5 MEDIUM | apko is vulnerable to unbounded resource consumption in expandapk.Split on attacker-contro |
IV. Related Vulnerabilities
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V. Comments for CVE-2026-25145
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