{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-121746 exists.","exposure":"","fix":"No fix has been published for CVE-2026-121746 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-121746 is a medium-severity vulnerability in nvm-sh nvm, published on 4 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-121746 and fix it if it is affected.\n\nWhat it is: CVE-2026-121746 is a medium-severity vulnerability in nvm-sh nvm, published on 4 Nov 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-121746 exists.\n\nAffected product: nvm-sh nvm. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-121746/ (Markdown: https://insights.sbomify.com/CVE-2026-121746/index.md)","id":"CVE-2026-121746","markdown":"https://insights.sbomify.com/CVE-2026-121746/index.md","name":"CVE-2026-121746","record":{"aliases":["GHSA-8qjx-8r8m-mpqh"],"analysis":null,"analysis_generated_by":null,"assigner":"harborist","cpe":[],"cvss":{"score":6.7,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"Node Version Manager (nvm) is a POSIX-compliant shell function for managing multiple node.js versions. In versions 0.40.0 through 0.40.8, `nvm use --save` and `nvm install --save` (or `-w`) write the resolved version to `$PWD/.nvmrc` with `tee`, which follows a symbolic link. A repository that commits `.nvmrc` as a symlink to a path outside itself (git recreates the link on clone) therefore makes `--save` truncate any file the user can write, such as a shell startup file or `~/.ssh/authorized_keys`, and replace its contents with the version string, or create the target of a dangling link; the link itself is left unchanged, so `git status` stays clean. The attacker does not control the content written, so this is data loss, not code execution. Version 0.41.0 refuses, with a warning, to write when `.nvmrc` in the current directory is a symlink, dangling or not, rather than writing through it or replacing it.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"nvm use --save and nvm install --save write through a symlinked .nvmrc, overwriting any file the user can write","id":"CVE-2026-121746","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"nvm prints the contents of any readable file through a symlinked .nvmrc","id":"CVE-2026-121747"},"nickname":null,"packages":[],"prev":{"headline":"nvm exposes NVM_AUTH_HEADER to other local users on the curl/wget command line","id":"CVE-2026-121745"},"products":["nvm"],"published":"2026-11-04","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-11-09","vendors":["nvm-sh"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-121746/"}