{"answers":{"affected":"3 open source packages ship an affected version, including chainguard.dev/melange. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-25143 in the wild and no public exploit code.","fix":"Upgrade chainguard.dev/melange to 0.40.3 or later.","what":"CVE-2026-25143 is a high-severity command injection vulnerability in chainguard-dev melange, published on 4 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-25143 and fix it if it is affected.\n\nWhat it is: CVE-2026-25143 is a high-severity command injection vulnerability in chainguard-dev melange, published on 4 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-25143 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- chainguard.dev/melange (Go): affected from 0.10.0; fixed in 0.40.3\n- chainguard.dev/melange (Go): affected from 0.10.0; fixed in 0.40.3\n- chainguard.dev/melange (Go): affected from 0.10.0; fixed in 0.40.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-25143/ (Markdown: https://insights.sbomify.com/CVE-2026-25143/index.md)","id":"CVE-2026-25143","markdown":"https://insights.sbomify.com/CVE-2026-25143/index.md","name":"CVE-2026-25143","record":{"aliases":["GHSA-rf4g-89h5-crcr","GO-2026-4412"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Go package builder","requires_auth":"none","summary":"Attackers can execute arbitrary shell commands on the build host by injecting metacharacters into melange patch pipeline inputs.","user_interaction":"required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"melange","vendor":"chainguard"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"melange allows users to build apk packages using declarative pipelines. From version 0.10.0 to before 0.40.3, an attacker who can influence inputs to the patch pipeline could execute arbitrary shell commands on the build host. The patch pipeline in pkg/build/pipelines/patch.yaml embeds input-derived values (series paths, patch filenames, and numeric parameters) into shell scripts without proper quoting or validation, allowing shell metacharacters to break out of their intended context. The vulnerability affects the built-in patch pipeline which can be invoked through melange build and melange license-check operations. An attacker who can control patch-related inputs (e.g., through pull request-driven CI, build-as-a-service, or by influencing melange configurations) can inject shell metacharacters such as backticks, command substitutions $(…), semicolons, pipes, or redirections to execute arbitrary commands with the privileges of the melange build process. This issue has been patched in version 0.40.3.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"melange affected by potential host command execution via license-check YAML mode patch pipeline","id":"CVE-2026-25143","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Talishar has a Stored XSS which can lead to data exfiltration \u0026 user impersonation","id":"CVE-2026-25144"},"packages":[{"ecosystem":"Go","fixed":["0.40.3"],"introduced":["0.10.0"],"last_affected":[],"package":"chainguard.dev/melange","purl":null,"source":"GHSA-rf4g-89h5-crcr"},{"ecosystem":"Go","fixed":["0.40.3"],"introduced":["0.10.0"],"last_affected":[],"package":"chainguard.dev/melange","purl":"pkg:golang/chainguard.dev/melange","source":"GHSA-rf4g-89h5-crcr"},{"ecosystem":"Go","fixed":["0.40.3"],"introduced":["0.10.0"],"last_affected":[],"package":"chainguard.dev/melange","purl":"pkg:golang/chainguard.dev/melange","source":"GO-2026-4412"}],"prev":{"headline":"SandboxJS Prototype Pollution -\u003e Sandbox Escape -\u003e RCE","id":"CVE-2026-25142"},"products":["melange"],"published":"2026-02-04","related":[{"cvss_score":8.2,"headline":"melange QEMU runner could write files outside workspace directory","id":"CVE-2026-24843","kev_date_added":null,"published":"2026-02-04"},{"cvss_score":7.8,"headline":"melange pipeline working-directory could allow command injection","id":"CVE-2026-24844","kev_date_added":null,"published":"2026-02-04"},{"cvss_score":6.1,"headline":"melange has Path Traversal When Resolving External Pipelines via Unvalidated pipeline[].uses","id":"CVE-2026-29050","kev_date_added":null,"published":"2026-04-23"},{"cvss_score":5.5,"headline":"melange has a path traversal in license-path which allows reading files outside workspace","id":"CVE-2026-25145","kev_date_added":null,"published":"2026-02-04"},{"cvss_score":4.4,"headline":"melange has Path Traversal via .PKGINFO in --persist-lint-results","id":"CVE-2026-29051","kev_date_added":null,"published":"2026-04-24"},{"cvss_score":4.3,"headline":"melange: unbounded HTTP download in `melange update-cache` can exhaust disk in CI","id":"CVE-2026-29049","kev_date_added":null,"published":"2026-03-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-02-05","vendors":["chainguard-dev"]},"summary":"Attackers can execute arbitrary shell commands on the build host by injecting metacharacters into melange patch pipeline inputs.","url":"https://insights.sbomify.com/CVE-2026-25143/"}