{"affected":[{"defaultStatus":"unaffected","product":"nvm","source":"CNA: harborist","vendor":"nvm-sh","versions":[{"lessThan":"0.41.0","status":"affected","version":"0.27.0","versionType":"semver"}]}],"cveId":"CVE-2026-121748","cwes":["CWE-73"],"description":"Node Version Manager (nvm) is a POSIX-compliant shell function for managing multiple node.js versions. In versions 0.27.0 through 0.40.8, when a project's `.npmrc` sets `prefix`, `nvm use` tells the user to run `nvm use --delete-prefix`, which runs `npm config delete prefix` and `npm config delete globalconfig` in the current directory without naming a config file. npm loads the project `.npmrc` before deciding which file to edit, so that file chooses the target: `userconfig=~/.bashrc` makes npm rewrite `~/.bashrc` as ini (corrupting it), and `location=global` with `globalconfig=` leaves the chosen file at mode 0666, which on a shared machine lets another local user write to it. The attacker (the author of a cloned repository or archive, or a local user who can write a shared parent directory) chooses the file but not the bytes written, and no project code runs. Version 0.41.0 no longer lets a project `.npmrc` select which config file `--delete-prefix` edits.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":1.8,"severity":"low","source":"CNA: harborist","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0"},{"score":3.6,"severity":"low","source":"CNA: harborist","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L","version":"3.1"}],"modifiedAt":1793827765656,"publishedAt":1793827765656,"references":[{"source":"CNA: harborist","tags":["vendor-advisory"],"url":"https://github.com/nvm-sh/nvm/security/advisories/GHSA-ccgf-7gv4-xg5h"},{"source":"CNA: harborist","tags":["patch"],"url":"https://github.com/nvm-sh/nvm/commit/4049296ca8eef2067517d8cfd5ef5c0e615daa10"}],"remediation":[{"kind":"fix","source":"CNA: harborist","text":"Upgrade to nvm 0.41.0 or later."},{"kind":"workaround","source":"CNA: harborist","text":"Until upgrading, do not run `nvm use --delete-prefix` in an untrusted project directory; remove the `prefix` setting from your own npmrc files by hand instead."},{"kind":"fix","source":"CNA: harborist","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/nvm-sh/nvm/commit/4049296ca8eef2067517d8cfd5ef5c0e615daa10"}],"revision":"fa6d701274180e3deee33e38ba988a8091820aacb4da1c3ba91ac65093872396","sources":[{"modifiedAt":1793827765656,"name":"CNA: harborist","retrievedAt":1793830354045,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121748"}],"ssvc":null,"status":"published","title":"nvm use --delete-prefix lets a project .npmrc choose which file npm rewrites or makes world-writable","updatedAt":1793830354045}