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Update dependency @faker-js/faker to v10 [SECURITY] - #109

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security/renovate-npm-faker-js-faker-vulnerability
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Update dependency @faker-js/faker to v10 [SECURITY]#109
ptspawn wants to merge 1 commit into
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security/renovate-npm-faker-js-faker-vulnerability

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@ptspawn ptspawn commented Sep 3, 2026

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This PR contains the following updates:

Package Change Age Confidence
@faker-js/faker (source) ^9.9.0 → ^10.0.0 age confidence

Faker: helpers.fake exploitable into arbritary code execution

CVE-2026-73231 / GHSA-qxc2-j82w-r537

More information

Details

Summary

faker.helpers.fake can be tricked into arbritary code execution.

Details

fakeEval.resolveProperty resolves properties on functions itself instead of resolving the nested function first.
This can be addressed by recursively calling resolveProperty instead of accessing the property after one iteration.

PoC

Go to https://fakerjs.dev/
Open Browser console and run

await enableFaker(); // or import faker
faker.rawDefinitions.test = (() => () => {}); // Any function that returns a function
faker.helpers.fake(`{{test.constructor(alert('PowerLevel: Eval'))}}`);
Impact

The Fake method claims:

It is also NOT possible to use any non-faker methods or plain javascript in such patterns.

Which is objectively false, since any global gets fully accessible in the fake string.

Severity

  • CVSS Score: 7.8 / 10 (High)
  • Vector String: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).

Release Notes

faker-js/faker (@​faker-js/faker)

v10.5.0

Compare Source

New Locales
Features
Bug Fixes

v10.4.0

Compare Source

New Locales
Features
Changed Locales
  • locale: filter and cleanup PersonEntryDefintions data (#​3266) (67defc8)
Bug Fixes
  • locales: correct typos and capitalization in es_MX street names (#​3737) (2b32c28)

v10.3.0

Compare Source

New Locales
Features
Changed Locales
Bug Fixes

v10.2.0

Compare Source

New Locales
Features
Bug Fixes

v10.1.0

Compare Source

New Locales
Bug Fixes

v10.0.0

Compare Source

New Locales
Features
  • locales: add animal vocabulary(bear, bird, cat, rabbit, pet_name) in Korean (#​3535) (0d2143c)
Changed Locales

Configuration

📅 Schedule: (UTC)

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🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

  • If you want to rebase/retry this PR, check this box

This PR has been generated by Mend Renovate.

@ptspawn
ptspawn requested review from a team as code owners September 3, 2026 13:07
@ptspawn
ptspawn force-pushed the security/renovate-npm-faker-js-faker-vulnerability branch from a93fe23 to cb2d2f4 Compare September 7, 2026 07:14
@github-actions

github-actions Bot commented Sep 7, 2026

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Coverage report

Total coverage

Status Category Percentage Covered / Total
🟢 Statements 32.59% 3482/10684
🟢 Branches 20.9% 1398/6690
🟢 Functions 29.04% 562/1935
🟢 Lines 37.3% 4102/10997

Status of coverage: 🟢 - ok, 🟡 - slightly more than threshold, 🔴 - under the threshold

Report generated by 🧪jest coverage report action from cb2d2f4

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@ptspawn @renovate-bot