v10.34.2: pnpm 10.34.2

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⚠️ Security fix — environment variables in a project .npmrc (action may be required)

Following GHSA-3qhv-2rgh-x77r, pnpm no longer expands ${ENV_VAR} placeholders that come from a repository-controlled config file, because a malicious repository could otherwise use them to leak your environment secrets (npm tokens, CI job tokens, etc.) to an attacker-controlled registry during install. This applies to:

• the project/workspace .npmrc — registry, @scope:registry, proxy URLs, URL-scoped keys (//host/…), and credential values (_authToken, _auth, _password, username, tokenHelper, cert, key);
• registry URLs in pnpm-workspace.yaml.

This release also closes a bypass where a project .npmrc could set userconfig, globalconfig, or prefix to make pnpm load a repo-supplied file as trusted config (via @pnpm/npm-conf@3.0.3).

Environment variables are still expanded in trusted config: your user-level ~/.npmrc, the global config, CLI options, and environment config.

If your authentication broke after upgrading, move the token out of the committed .npmrc:

# Writes to your user/global config, not the repository:
pnpm config set "//registry.npmjs.org/:_authToken" "$NPM_TOKEN"

Or keep the ${NPM_TOKEN} line but put it in your user-level ~/.npmrc instead of the repo. In GitHub Actions, actions/setup-node with registry-url already writes a user-level .npmrc, so NODE_AUTH_TOKEN keeps working. For other CI where editing each pipeline is hard, set NPM_CONFIG_USERCONFIG=.npmrc in the CI environment to declare the project .npmrc trusted.

See https://pnpm.io/npmrc for full migration details.

Patch Changes

• Package-manager bootstrap traffic is now resolved through trusted registries and trusted network config. When pnpm downloads the pnpm version requested by a repository's packageManager field, the registry it fetches from (and the proxy/TLS settings used for that traffic) now come exclusively from trusted config sources — CLI options, env config, user and global .npmrc — defaulting to the public npm registry, instead of the repository's project/workspace settings.
• pnpm now verifies the npm registry signature of a package-manager binary before spawning it. When the packageManager field (or pnpm self-update) makes pnpm download another pnpm version, the staged install is verified corepack-style: the integrity recorded in the staged lockfile must carry a valid npm registry signature for the exact name@version, validated against npm's public signing keys that ship embedded in the pnpm CLI. Verification fails closed — a tampered download, an unsigned package, or an unreachable registry refuses the version switch rather than running an unverified binary. It runs only when the wanted version is actually downloaded (a tools-directory cache miss), so repeated commands pay no extra network round trip.
• Environment variable expansion is now trust-aware for registry/auth config and request destinations. Repository-controlled config files (the project and workspace .npmrc and pnpm-workspace.yaml) can no longer expand ${...} placeholders in registry/proxy request destinations, URL-scoped keys, or registry credential values, preventing repository-controlled configuration from exfiltrating environment secrets through request URLs. Trusted user/global/CLI/env config keeps full env expansion, so existing token and registry setup flows continue to work.
• Reject reserved manifest bin names ("", ".", "..", and scoped forms such as @scope/..) when resolving a package's bins. These names previously passed the bin-name guard and, when joined to the global bin directory during global remove/update/add operations, could resolve to the global bin directory itself or its parent and have it recursively deleted.
• Require trusted package identity before package-name onlyBuiltDependencies (and allowBuilds) entries can approve lifecycle scripts for git, git-hosted tarball, direct tarball, and local directory artifacts. To approve one of those artifacts explicitly, use its peer-suffix-free lockfile depPath as the key. Lockfile entries are now rejected when a registry-style dependency path (name@semver) is backed by a git, directory, or git-hosted tarball resolution (ERR_PNPM_RESOLUTION_SHAPE_MISMATCH), so the dependency path is a reliable artifact identity by the time scripts can run.
• pnpm now verifies the detached OpenPGP signature of a Node.js release's SHASUMS256.txt against the Node.js release team's public keys (embedded in the pnpm CLI) before trusting its hashes. The Node.js download mirror is repository-configurable (node-mirror:<channel> in .npmrc), and the integrity check previously trusted a SHASUMS256.txt fetched from that same mirror — a circular check that a malicious mirror could satisfy with a tampered binary and matching hashes. A mirror that proxies the real signed SHASUMS keeps working unchanged. Only the release channel publishes signed SHASUMS files, so pre-release channels (rc, nightly, …) remain unverified.

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