fix(deps): Update dependency zx to v8.8.5 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
zx (source)	8.3.1 -> 8.8.5

GitHub Vulnerability Alerts

CVE-2025-24959

Impact

This vulnerability is an Environment Variable Injection issue in dotenv.stringify, affecting google/zx version 8.3.1.

An attacker with control over environment variable values can inject unintended environment variables into process.env. This can lead to arbitrary command execution or unexpected behavior in applications that rely on environment variables for security-sensitive operations. Applications that process untrusted input and pass it through dotenv.stringify are particularly vulnerable.

Patches

This issue has been patched in version 8.3.2. Users should immediately upgrade to this version to mitigate the vulnerability.

Workarounds

If upgrading is not feasible, users can mitigate the vulnerability by sanitizing user-controlled environment variable values before passing them to dotenv.stringify. Specifically, avoid using ", ', and backticks in values, or enforce strict validation of environment variables before usage.

References

• Issue Report
• Security Policy
• Google Vulnerability Disclosure
• Patch

CVE-2025-13437

When zx is invoked with --prefer-local=, the CLI creates a symlink named ./node_modules pointing to /node_modules. Due to a logic error in src/cli.ts (linkNodeModules / cleanup), the function returns the target path instead of the alias (symlink path). The later cleanup routine removes what it received, which deletes the target directory itself. Result: zx can delete an external /node_modules outside the current working directory.

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Release Notes

google/zx (zx)

v8.8.5: — Temporary Reservoir

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This release fixes the issue, when zx flushes external node_modules on linking #​1348 #​1349 #​1355

Also [email protected] arrives here.

v8.8.4: — Flange Coupling

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It's time. This release updates zx internals to make the ps API and related methods ProcessPromise.kill(), kill() work on Windows systems without wmic.
#​1344 webpod/ps#15

1. WMIC will be missing in Windows 11 25H2 (kernel >= 26000)
2. The windows-latest label in GitHub Actions will migrate from Windows Server 2022 to Windows Server 2025 beginning September 2, 2025 and finishing by September 30, 2025.

https://github.blog/changelog/2025-07-31-github-actions-new-apis-and-windows-latest-migration-notice/#windows-latest-image-label-migration

v8.8.3: — Sealing Gasket

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Continues #​1339 to prevent injections via Proxy input or custom toString() manipulations.

v8.8.2: — Leaking Valve

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Fixes potential cmd injection via kill() method for Windows platform. #​1337 #​1339. Affects the versions range 8.7.1...8.8.1.

v8.8.1: — Turbo Flush

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We keep improving the projects internal infra to bring more stability, safety and performance for artifacts.

Featfixes

• Applied flags filtration for CLI-driven deps install #​1308
• Added kill() event logging #​1312
• Set SIGTERM as kill() fallback signal #​1313
• Allowed stdio() arg be an array #​1311

const p = $({halt: true})`cmd`
p.stdio([stream, 'ignore', 'pipe'])

Enhancements

• Added check for zx@​lite pkg contents #​1317 #​1316
• Simplified ProcessPromise[asyncIterator] inners #​1307
• Updated deps: chalk 5.6.0, fs-extra 11.3.1, yaml 2.8.1 #​1309 #​1323 #​1326
• Added TS@​next to the test matrix #​1310
• Optimized internal shell setters #​1314
• Refactored build-publish pipelines and scripts #​1319 #​1320 #​1321 #​1322 #​1324 #​1325 #​1327

v8.8.0: — Pressure Tested

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This release enhances the coherence between the ProcessPromise and the Streams API, eliminating the need for certain script-level workarounds.

✨ New Features

unpipe() — Selectively stop piping

You can now call .unpipe() to stop data transfer from a source to a destination without closing any of the pair. #​1302

const p1 = $`echo foo && sleep 0.1 && echo bar && sleep 0.1 && echo baz && sleep 0.1 && echo qux`
const p2 = $`echo 1 && sleep 0.15 && echo 2 && sleep 0.1 && echo 3`
const p3 = $`cat`

p1.pipe(p3)
p2.pipe(p3)

setTimeout(() => p1.unpipe(p3), 150)

const { stdout } = await p3
// 'foo\n1\nbar\n2\n3\n'

Many-to-one piping

Multiple sources can now stream into a single destination. All sources complete before the destination closes. #​1300

const $h = $({ halt: true })
const p1 = $`echo foo`
const p2 = $h`echo a && sleep 0.1 && echo c && sleep 0.2 && echo e`
const p3 = $h`sleep 0.05 && echo b && sleep 0.1 && echo d`
const p4 = $`sleep 0.4 && echo bar`
const p5 = $h`cat`

await p1
p1.pipe(p5)
p2.pipe(p5)
p3.pipe(p5)
p4.pipe(p5)

const { stdout } = await p5.run()
// 'foo\na\nb\nc\nd\ne\nbar\n'

Piping from rejected processes

Processes that exit with errors can now still pipe their output. The internal recorder retains their stream, status, and exit code. #​1296

const p1 = $({ nothrow: true })`echo foo && exit 1`
await p1

const p2 = p1.pipe($({ nothrow: true })`cat`)
await p2

p1.output.toString() // 'foo\n'
p1.output.ok         // false
p1.output.exitCode   // 1

p2.output.toString() // 'foo\n'
p2.output.ok         // false
p2.output.exitCode   // 1

Components versions

Since zx bundles third-party libraries without their package.jsons, their versions weren’t previously visible. You can now access them via the versions static map — including zx itself. #​1298 #​1295

import { versions } from 'zx'

versions.zx     // 8.7.2
versions.chalk  // 5.4.1

v8.7.2: — Copper Crafter

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Stability and customizability improvements

• Handle nothrow option on ProcessPromise init stage #​1288

const o = await $({ nothrow: true })`\033`
o.ok      // false
o.cause   // Error

• Handle _snapshot.killSignal value on kill() #​1287

const p = $({killSignal: 'SIGKILL'})`sleep 10`
await p.kill()
p.signal  // 'SIGKILL'

• Introduced Fail class #​1285

import { Fail } from 'zx'

Fail.EXIT_CODES['2'] = 'Custom error message'
Fail.formatErrorMessage = (err: Error, from: string): string =>
  `${err.message} (${from})`

• Expose $ as type #​1283

import type { $, Options } from 'zx'

const custom$: $ = (pieces: TemplateStringsArray | Partial<Options>, ...args: any[]) => {
  // ... custom implementation
}

• Internal tweak ups #​1276 #​1277 #​1278 #​1279 #​1280 #​1281 #​1282 #​1286 #​1289

• Described the zx architecture basics. This section helps to better understand the zx concepts and internal logic, and will be useful for those who want to become a project contributor, make tools based on it, or create something similar from scratch. #​1290 #​1291 #​1292

v8.7.1: — Pipe Whisperer

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Continues v8.7.0: handles new ps() corner case and improves $.kill mechanics on Windows #​1266 #​1267 #​1269 webpod/ps#14

v8.7.0: — Solder Savior

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Important fixes for annoying flaky bugs

kill() 🐞

We've found an interesting case #​1262

const p = $`sleep 1000`
const {pid} = p // 12345
await p.kill()

If we kill the process again, the result might be unexpected:

await ps({pid}) // {pid: 12345, ppid: 67890, command: 'another command', ...}
p.kill()

This happens because the pid may be reused by the system for another process, so we've added extra assertions to prevent indeterminacy:

p.kill()  // Error: Too late to kill the process.
p.abort() // Error: Too late to abort the process.

ps() 🐛

• ps() uses wmic internally on Windows, it relies on fragile heuristics to parse the output. We have improved this logic to handle more format variants, but over time (in v9 maybe) we're planning to change the approach.

#​1256 #​1263 webpod/ps#12 webpod/ingrid#6

const [root] = await ps.lookup({ pid: process.pid })
assert.equal(root.pid, process.pid)

v8.6.2: — Flow Unstoppable

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Fixes $.prefix & $.postfix values settings via env variables #​1261 #​1260

v8.6.1: — Drain Hero

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• Use process.env.SHELL as default shell if defined #​1252

SHELL=/bin/zsh zx script.js

• Accept numeric strings as parseDuration() arg #​1249

await sleep(1000)   // 1 second
await sleep('1000') // 1 second

• Update docker base image to node:24-alpine #​1239
• Docs improvements #​1242 #​1243 #​1246 #​1248 #​1251

v8.6.0: — Valve Vanguard

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• Enabled thenable params processing for $ literals #​1237

const a1 = $`echo foo`
const a2 = new Promise((resolve) => setTimeout(resolve, 20, ['bar', 'baz']))

await $`echo ${a1} ${a2}` // foo bar baz

• A dozen of internal refactorings #​1225 #​1226 #​1228 #​1229 #​1230 #​1231 #​1232 #​1233 #​1234 #​1235 #​1236 #​1238 #​1239
  • Deps bumping
  • Bytes shrinking
  • Docs improvements

v8.5.5: — PVC Wizard

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Minor feature polish.

• ProcessPromise and ProcessOutput lines() getters now accept a custom delimiter #​1220 #​1218

const cwd = tempdir()
const delimiter = '\0'

const p1 = $({
  cwd
})`touch foo bar baz; find ./ -type f -print0 -maxdepth 1`
(await p1.lines(delimiter)).sort() // ['./bar', './baz', './foo']
  
// or via options
const lines = []
const p2 = $({
  delimiter,
  cwd,
})`find ./ -type f -print0 -maxdepth 1`

for await (const line of p2) {
  lines.push(line)
}

lines.sort() // ['./bar', './baz', './foo']

• Handle .nothrow() option in ProcessProcess[AsyncIterator] #​1216 #​1217
• Updates yaml to v2.8.0 #​1221

v8.5.4: — Pipe Dreamer

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• Fixed the pipe(file: string) signature type declaration #​1208 #​1209

v8.5.3: — Trap Master

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• Another portion of JSR related improvements #​1193 #​1192
• Goods refactoring #​1195
  • Fixes expBackoff implementation
  • Sets $.log.output as default spinner() output
  • Makes configurable question() I/O
• Added Graaljs compatability test #​1194
• Docs improvements, usage examples updates #​1198

v8.5.2: — Threaded Perfection

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• Various JSR fixes #​1189 #​1186 #​1179 #​1187
• Docs improvements #​1185 #​1181

v8.5.0: — Flow Splitter

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In this release we're significantly expanding the zx setup capabilities.

zx@​lite

Just core functions without extras, ~7x smaller than the full version.
#​1131

npm i zx@lite
npm i [email protected]

Detailed comparison: zx/versions

import { $ } from 'zx'
await $`echo foo`

Channels

We have completely reforged the distribution flow. Now zx is available in multiple formats:

• npmjs
• GH npm
• GH repo
• GH docker
• JSR
• Homebrew

##### npm pkg from registry.npmjs.org
npm i zx        

##### install directly from the GH
npm i google/zx 

##### from GH the npm registry
npm i --registry=https://npm.pkg.github.com @​google/zx

##### fetch from the JSR
##### https://jsr.io/docs/using-packages

##### @​webpod is temporary JSR scope until @​google/zx becomes ready, we'll migrate later
npx jsr add @​webpod/zx
deno add jsr:@​webpod/zx

##### homebrew formula
##### https://github.com/Homebrew/homebrew-core/blob/master/Formula/z/zx.rb
brew install zx

#​1141...
#​1157

Docker

If you'd prefer to run zx in a container, you can pull the image from the GH docker registry.
node:22-alpine is used as a base. #​1142 #​1145

docker pull ghcr.io/google/zx:8.5.0
docker run -t ghcr.io/google/zx:8.5.0 -e="await \$({verbose: true})\`echo foo\`"
docker run -t -i -v ./:/script ghcr.io/google/zx:8.5.0 script/t.js

Chores

• Introduced fetch pipe helper to bypass string size limits #​1130 #​977

const p1 = fetch('https://example.com').pipe($`cat`)
const p2 = fetch('https://example.com').pipe`cat`

• Added glob.sync shortcut #​1135

import { glob } from 'zx'
const packages = glob.sync(['package.json', 'packages/*/package.json'])

• Restored CLI flags and envars symmetry #​1137 #​1138

ZX_REGISTRY='https://custom-registry.example.com' zx script.js

• Enhanced errors stacktrace formatting #​1166
• Improved 3rd party licenses digest #​1140
• Enabled zizmor checks #​1126
• Docs improvements #​1128 #​1134 #​1136 #​1164

v8.4.2

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v8.4.1: – Rusty Elbow

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Logger enhancements are arriving in this release. #​1119 #​1122 #​1123 #​1125

• You can customize the output by defining your own formatters for each log entry kind.

$.log.formatters = {
  cmd: (entry: LogEntry) => `CMD: ${entry.cmd}`,
  fetch: (entry: LogEntry) => `FETCH: ${entry.url}`
  //...
}

• Cmd highlighter now should properly detect bins and arguments. If still not, please report it in #​1122
• Switched to TS 5.8 #​1120
• Applied zizmor to check GHA workflows #​1126
• Prettier is now enabled as a pre-commit hook #​1118

v8.4.0: – Drip Detective

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Try the new batch of enhancements: npm i [email protected] https://www.npmjs.com/package/zx/v/8.4.0

Changes

• The CLI option --prefer-local now allows linking both external binaries and packages #​1116 #​1117

const cwd = tmpdir()
const external = tmpdir()
await fs.outputJson(path.join(external, 'node_modules/a/package.json'), {
  name: 'a',
  version: '1.0.0',
  type: 'module',
  exports: './index.js',
})
await fs.outputFile(
  path.join(external, 'node_modules/a/index.js'),
  `
export const a = 'AAA'
`
)
const script = `
import {a} from 'a'
console.log(a);
`
const out = await $`zx --cwd=${cwd} --prefer-local=${external} --test <<< ${script}`
assert.equal(out.stdout, 'AAA\n')

• The quote has been slightly changed for a conner case, when zx literal gets an array.
  #​999 #​1113

const p = $({prefix: '', postfix: ''})`echo ${[1, '', '*', '2']}`

// before
p.cmd //  `echo 1  $'*' 2`) 

// after
p.cmd //  `echo 1 $'' $'*' 2`) 

• Provided support for custom script extensions via CLI #​1104 #​1105

zx script.zx           # Unknown file extension "\.zx"
zx --ext=mjs script.zx # OK

• Enhanced nothrow option to suppress any errors #​1108 #​1109

const err = new Error('BrokenSpawn')
const o = await $({
  nothrow: true,
  spawn() {
    throw err
  },
})`echo foo`
o.ok       // false
o.exitCode // null
o.message  // BrokenSpawn...
o.cause    // err

• @types/node and @types/fs-extra deps replaced with triple-slash typing refs #​1102
• Made ProcessOutput iterable #​1101
• Handle inappropriate ProcessPromise instantiation #​1097 #​1098
• Pass origin error as ProcessOuput cause #​1110
• Separated build and release steps #​1106
• Internal improvements
  • Introduced API bus #​1083
  • Optimized ProcessOutput inners #​1096 #​1095
  • Pinned deps #​1099 #​1100
  • Switched to explicit .ts extensions for relative imports #​1111

v8.3.2: – Clogged Drain

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Restrics unsafe vals usage on dotenv.stringify #​1093 #​1094

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	zx@​8.3.1 ⏵ 8.8.5	+2	+13	+4

View full report