CVE-2026-82393

A flaw was found in pnpm. This vulnerability allows a remote attacker to perform a path traversal by crafting a malicious tarball dependency's manifest name. During package installation, pnpm fails to properly validate the manifest name, leading to files being extracted outside the intended...

CVE-2026-82393 pnpm: A tarball dependency's manifest `name` escapes node_modules → arbitrary file write/overwrite on install

pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped path traversal in a tarball dependency's package.json manifest name because pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only for unscoped names. During pnpm install, the unvalidated name...

CVE-2026-82393 pnpm: A tarball dependency's manifest `name` escapes node_modules → arbitrary file write/overwrite on install

pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped path traversal in a tarball dependency's package.json manifest name because pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only for unscoped names. During pnpm install, the unvalidated name...

CVE-2026-82393

pnpm prior to 10.34.5 and 11.11.0 is vulnerable to a scoped path traversal in a tarball dependency's package.json manifest name. The root cause is in pickPackage.ts (npm-resolver), which rejects slash characters only for unscoped names, allowing a crafted scoped name to reach raw path joins in re...