CVE-2026-94185 - nvm alias resolution follows `..` and discloses files outside $NVM_DIR/alias

CVE-2026-94185 - nvm alias resolution follows `..` and discloses files outside $NVM_DIR/alias

https://cvefeed.io/rssfeed/latest.atom / Mon, 09/21/2026 - 07:33
CVE ID :CVE-2026-94185
Published : Sept. 21, 2026, 3:16 a.m. | 1 hour, 53 minutes ago
Description :nvm resolves a requested version or alias by treating it as a filename under $NVM_DIR/alias. Before 0.40.8, nvm_alias() concatenated the requested name onto that directory and read the result with no containment check, so a name containing a `..` component escaped the alias directory; under the default layout an alias such as `../../.npmrc` resolves to a file in the user's home directory. nvm_print_alias_file() then emits every non-comment, non-empty line of whatever was opened. A version string taken from an untrusted .nvmrc reaches this path, so a developer who runs `nvm use`, `nvm install`, or `nvm which` inside an attacker-supplied repository discloses the first non-comment line of an arbitrary file readable by that user, in the resulting "is not yet installed" error message. A user-supplied `nvm alias ` discloses every non-comment line of the target file. There is no integrity or availability impact, and no command execution on this path.
Severity: 6.7 | MEDIUM
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