{"answers":{"affected":"2 open source packages ship an affected version, including pnpm. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-23889 exists.","fix":"Upgrade pnpm to 10.28.1 or later.","what":"CVE-2026-23889 is a medium-severity path traversal vulnerability in pnpm, published on 26 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-23889 and fix it if it is affected.\n\nWhat it is: CVE-2026-23889 is a medium-severity path traversal vulnerability in pnpm, published on 26 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-23889 exists.\n\nAffected packages and fixed versions:\n- pnpm (npm): affected all versions; fixed in 10.28.1\n- pnpm (npm): affected all versions; fixed in 10.28.1\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-2026-23889/ (Markdown: https://insights.sbomify.com/CVE-2026-23889/index.md)","id":"CVE-2026-23889","markdown":"https://insights.sbomify.com/CVE-2026-23889/index.md","name":"CVE-2026-23889","record":{"aliases":["GHSA-6x96-7vc8-cm3p","MINI-2v89-hqqx-p9r4"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_modify","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"pnpm package manager","requires_auth":"none","summary":"Malicious packages can overwrite files outside the directory on Windows via path traversal, potentially leading to code execution or configuration tampering.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pnpm","vendor":"pnpm"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's tarball extraction allows malicious packages to write files outside the package directory on Windows. The path normalization only checks for `./` but not `.\\`. On Windows, backslashes are directory separators, enabling path traversal. This vulnerability is Windows-only. This issue impacts Windows pnpm users and Windows CI/CD pipelines (GitHub Actions Windows runners, Azure DevOps). It can lead to overwriting `.npmrc`, build configs, or other files. Version 10.28.1 contains a patch.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"pnpm has Windows-specific tarball Path Traversal","id":"CVE-2026-23889","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"pnpm scoped bin name Path Traversal allows arbitrary file creation outside node_modules/.bin","id":"CVE-2026-23890"},"packages":[{"ecosystem":"npm","fixed":["10.28.1"],"introduced":["0"],"last_affected":[],"package":"pnpm","purl":null,"source":"GHSA-6x96-7vc8-cm3p"},{"ecosystem":"npm","fixed":["10.28.1"],"introduced":["0"],"last_affected":[],"package":"pnpm","purl":"pkg:npm/pnpm","source":"GHSA-6x96-7vc8-cm3p"}],"prev":{"headline":"pnpm: Binary ZIP extraction allows arbitrary file write via path traversal (Zip Slip)","id":"CVE-2026-23888"},"products":["pnpm"],"published":"2026-01-26","related":[{"cvss_score":8.8,"headline":"pnpm: Transitive dependency alias path traversal allows project path override via symlink replacement","id":"CVE-2026-50016","kev_date_added":null,"published":"2026-06-25"},{"cvss_score":8.8,"headline":"pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfile-selected pnpm bytes","id":"CVE-2026-55698","kev_date_added":null,"published":"2026-06-25"},{"cvss_score":8.8,"headline":"pnpm v10+ Bypass \"Dependency lifecycle scripts execution disabled by default\"","id":"CVE-2025-69264","kev_date_added":null,"published":"2026-01-07"},{"cvss_score":8.8,"headline":"Untrusted Search Path in PNPM","id":"CVE-2022-26183","kev_date_added":null,"published":"2022-03-21"},{"cvss_score":8.2,"headline":"pnpm: Path traversal in configDependencies env lockfile allows symlink creation outside node_modules/.pnpm-config","id":"CVE-2026-59195","kev_date_added":null,"published":"2026-07-06"},{"cvss_score":7.6,"headline":"pnpm vulnerable to Command Injection via environment variable substitution","id":"CVE-2025-69262","kev_date_added":null,"published":"2026-01-07"},{"cvss_score":7.5,"headline":"pnpm: manifest identity spoof satisfies allowBuilds and runs attacker lifecycle","id":"CVE-2026-55487","kev_date_added":null,"published":"2026-06-25"}],"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":"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-27","vendors":["pnpm"]},"summary":"Malicious packages can overwrite files outside the directory on Windows via path traversal, potentially leading to code execution or configuration tampering.","url":"https://insights.sbomify.com/CVE-2026-23889/"}