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chore(deps): update dependency @babel/runtime to v7.26.10 [security]#160

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chore(deps): update dependency @babel/runtime to v7.26.10 [security]#160
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renovate/npm-babel-runtime-vulnerability

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@ZxBot ZxBot commented Apr 20, 2026

This PR contains the following updates:

Package Change Age Confidence
@babel/runtime (source) 7.26.77.26.10 age confidence

Babel has inefficient RegExp complexity in generated code with .replace when transpiling named capturing groups

CVE-2025-27789 / GHSA-968p-4wvh-cqc8

More information

Details

Impact

When using Babel to compile regular expression named capturing groups, Babel will generate a polyfill for the .replace method that has quadratic complexity on some specific replacement pattern strings (i.e. the second argument passed to .replace).

Your generated code is vulnerable if all the following conditions are true:

  • You use Babel to compile regular expression named capturing groups
  • You use the .replace method on a regular expression that contains named capturing groups
  • Your code uses untrusted strings as the second argument of .replace

If you are using @babel/preset-env with the targets option, the transform that injects the vulnerable code is automatically enabled if:

  • you use duplicated named capturing groups, and target any browser older than Chrome/Edge 126, Opera 112, Firefox 129, Safari 17.4, or Node.js 23
  • you use any named capturing groups, and target any browser older than Chrome 64, Opera 71, Edge 79, Firefox 78, Safari 11.1, or Node.js 10

You can verify what transforms @babel/preset-env is using by enabling the debug option.

Patches

This problem has been fixed in @babel/helpers and @babel/runtime 7.26.10 and 8.0.0-alpha.17, please upgrade. It's likely that you do not directly depend on @babel/helpers, and instead you depend on @babel/core (which itself depends on @babel/helpers). Upgrading to @babel/core 7.26.10 is not required, but it guarantees that you are on a new enough @babel/helpers version.

Please note that just updating your Babel dependencies is not enough: you will also need to re-compile your code.

Workarounds

If you are passing user-provided strings as the second argument of .replace on regular expressions that contain named capturing groups, validate the input and make sure it does not contain the substring $< if it's then not followed by > (possibly with other characters in between).

References

This vulnerability was reported and fixed in https://github.com/babel/babel/pull/17173.

Severity

  • CVSS Score: 6.2 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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


Release Notes

babel/babel (@​babel/runtime)

v7.26.10

Compare Source

v7.26.10 (2025-03-11)

Thanks @​jordan-choi and @​mmmsssttt404 for your first PRs!

This release includes a fix for GHSA-968p-4wvh-cqc8, a security vulnerability which affects the .replace method of transpiled regular expressions that use named capturing groups.

👓 Spec Compliance
🐛 Bug Fix
💅 Polish
🏠 Internal
Committers: 6

v7.26.9

Compare Source

v7.26.9 (2025-02-14)

🐛 Bug Fix
🏠 Internal
Committers: 5

Configuration

📅 Schedule: (in timezone Europe/Rome)

  • Branch creation
    • At any time (no schedule defined)
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🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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


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

This PR has been generated by Mend Renovate.

@ZxBot ZxBot force-pushed the renovate/npm-babel-runtime-vulnerability branch 2 times, most recently from dbde7b3 to ee2de54 Compare April 23, 2026 19:44
@ZxBot ZxBot force-pushed the renovate/npm-babel-runtime-vulnerability branch from ee2de54 to 3785a4f Compare April 24, 2026 02:32
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