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@babel/runtime-corejs2

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 6.2npmPublished

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

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

    Affected
    • npm @babel/runtime-corejs2 < 7.26.10; >= 8.0.0-alpha.0, < 8.0.0-alpha.17
    Fixed in
    7.26.108.0.0-alpha.17· Vendor fix available
    Issue
    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…

    Recommended action: Upgrade to 8.0.0-alpha.17 (pre-release) or 7.26.10 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.devSource checked Evidence →