melange has a path traversal in license-path which allows reading files outside workspace

TRUNG BÌNH 5.5CVE-2026-25145 · GHSA-2w4f-9fgg-q2v9 · GO-2026-4409 · Công bố 04/02/2026 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2026-25145 là lỗ hổng mức TRUNG BÌNH (CVSS 5.5) ảnh hưởng chainguard.dev/melange, melange (chainguard).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.19%, cao hơn 8.9% các lỗ hổng khác.
Cách xử lý: cập nhật lên 0.40.3, 0.40.5 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
chainguard.dev/melange Go	`≥ 0.14.0, < 0.40.3`	`0.40.3`
melange chainguard	`≥ 0.14.0, < 0.40.5`	`0.40.5`

Mô tả

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.

Fix: Merged in commit 2f95c9f4

Acknowledgements

melange thanks Oleh Konko (@1seal) from 1seal for discovering and reporting this issue.

Mô tả của NVD

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.