Update dependency @babel/runtime to v7.26.10 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@babel/runtime (source)	7.25.6 -> 7.26.10

GitHub Vulnerability Alerts

CVE-2025-27789

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.

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Release Notes

babel/babel (@​babel/runtime)

v7.26.10

Compare Source

👓 Spec Compliance

• babel-parser
  • #​17159 Disallow decorator in array pattern (@​JLHwung)

🐛 Bug Fix

• babel-parser, babel-template
  • #​17164 Fix: always initialize ExportDeclaration attributes (@​JLHwung)
• babel-core
  • #​17142 fix: "Map maximum size exceeded" in deepClone (@​liuxingbaoyu)
• babel-parser, babel-plugin-transform-typescript
  • #​17154 Update typescript parser tests (@​JLHwung)
• babel-traverse
  • #​17151 fix: Should not evaluate vars in child scope (@​liuxingbaoyu)
• babel-generator
  • #​17153 fix: Correctly generate abstract override (@​liuxingbaoyu)
• babel-parser
  • #​17107 Fix source type detection when parsing TypeScript (@​JLHwung)
• babel-helpers, babel-runtime, babel-runtime-corejs2, babel-runtime-corejs3
  • #​17173 Fix processing of replacement pattern with named capture groups (@​mmmsssttt404)

💅 Polish

• babel-standalone
  • #​17158 Avoid warnings when re-bundling @​babel/standalone with webpack (@​liuxingbaoyu)

🏠 Internal

• babel-parser
  • #​17160 Left-value parsing cleanup (@​JLHwung)

v7.26.9

Compare Source

🐛 Bug Fix

• babel-types
  • #​17103 fix: Definition for TSPropertySignature.kind (@​liuxingbaoyu)
• babel-generator, babel-types
  • #​17062 Print TypeScript optional/definite in ClassPrivateProperty (@​jamiebuilds-signal)

🏠 Internal

• babel-types
  • #​17130 Use .ts files with explicit reexports to solve name conflicts (@​nicolo-ribaudo)
• babel-core
  • #​17127 Do not depend on @types/gensync in Babel 7 (@​nicolo-ribaudo)

v7.26.7

Compare Source

🐛 Bug Fix

• babel-helpers, babel-preset-env, babel-runtime-corejs3
  • #​17086 Make "object without properties" helpers ES6-compatible (@​tquetano-netflix)
• babel-plugin-transform-typeof-symbol
  • #​17085 fix: Correctly handle typeof in arrow functions (@​liuxingbaoyu)
• babel-parser
  • #​17079 Respect ranges option in estree method value (@​JLHwung)
• babel-core
  • #​17052 Do not try to parse .ts configs as JSON if natively supported (@​nicolo-ribaudo)
• babel-plugin-transform-typescript
  • #​17050 fix: correctly resolve references to non-constant enum members (@​branchseer)
• babel-plugin-transform-typescript, babel-traverse, babel-types
  • #​17025 fix: Remove type-only import x = y.z (@​liuxingbaoyu)

v7.26.0

Compare Source

🚀 New Feature

• babel-core, babel-generator, babel-parser, babel-plugin-syntax-import-assertions, babel-plugin-syntax-import-attributes, babel-preset-env, babel-standalone, babel-types
  • #​16850 Enable import attributes parsing by default (@​nicolo-ribaudo)
• babel-core
  • #​16862 feat: support async plugin's pre/post (@​timofei-iatsenko)
• babel-compat-data, babel-plugin-proposal-regexp-modifiers, babel-plugin-transform-regexp-modifiers, babel-preset-env, babel-standalone
  • #​16692 Add transform-regexp-modifiers to preset-env (@​JLHwung)
• babel-parser
  • #​16849 feat: add startIndex parser option (@​DylanPiercey)
• babel-generator, babel-parser, babel-plugin-syntax-flow
  • #​16841 Always enable parsing of Flow enums (@​nicolo-ribaudo)
• babel-helpers, babel-preset-typescript, babel-runtime-corejs3
  • #​16794 Support import() in rewriteImportExtensions (@​liuxingbaoyu)
• babel-generator, babel-parser
  • #​16708 Add experimental format-preserving mode to @babel/generator (@​nicolo-ribaudo)

🐛 Bug Fix

• babel-core
  • #​16928 Workaround Node.js bug for parallel loading of TLA modules (@​nicolo-ribaudo)
  • #​16926 Fix loading of modules with TLA in Node.js 23 (@​nicolo-ribaudo)

💅 Polish

• babel-plugin-proposal-json-modules, babel-plugin-transform-json-modules, babel-standalone
  • #​16924 Rename proposal-json-modules to transform-json-modules (@​nicolo-ribaudo)

🏠 Internal

• babel-code-frame, babel-highlight
  • #​16896 Inline @babel/highlight in @babel/code-frame (@​nicolo-ribaudo)
• babel-generator, babel-parser, babel-types
  • #​16732 Add kind to TSModuleDeclaration (@​liuxingbaoyu)

🏃‍♀️ Performance

• babel-helper-module-transforms, babel-plugin-transform-modules-commonjs
  • #​16882 perf: Improve module transforms (@​liuxingbaoyu)

v7.25.9

Compare Source

🐛 Bug Fix

• babel-parser, babel-template, babel-types
  • #​16905 fix: Keep type annotations in syntacticPlaceholders mode (@​liuxingbaoyu)
• babel-helper-compilation-targets, babel-preset-env
  • #​16907 fix: support BROWSERSLIST{,_CONFIG} env (@​JLHwung)
• Other
  • #​16884 Analyze ClassAccessorProperty to prevent the no-undef rule (@​victorenator)

🏠 Internal

• babel-helper-transform-fixture-test-runner
  • #​16914 remove test options flaky (@​JLHwung)

🏃‍♀️ Performance

• babel-parser, babel-types
  • #​16918 perf: Make VISITOR_KEYS etc. faster to access (@​liuxingbaoyu)

v7.25.7

Compare Source

🐛 Bug Fix

• babel-helper-validator-identifier
  • #​16825 fix: update identifier to unicode 16 (@​JLHwung)
• babel-traverse
  • #​16814 fix: issue with node path keys updated on unrelated paths (@​DylanPiercey)
• babel-plugin-transform-classes
  • #​16797 Use an inclusion rather than exclusion list for super() check (@​nicolo-ribaudo)
• babel-generator
  • #​16788 Fix printing of TS infer in compact mode (@​nicolo-ribaudo)
  • #​16785 Print TS type annotations for destructuring in assignment pattern (@​nicolo-ribaudo)
  • #​16778 Respect [no LineTerminator here] after nodes (@​nicolo-ribaudo)

💅 Polish

• babel-types
  • #​16852 Add deprecated JSDOC for fields (@​liuxingbaoyu)

🏠 Internal

• babel-core
  • #​16820 Allow sync loading of ESM when --experimental-require-module (@​nicolo-ribaudo)
• babel-helper-compilation-targets, babel-helper-plugin-utils, babel-preset-env
  • #​16858 Add browserslist config to external dependency (@​JLHwung)
• babel-plugin-proposal-destructuring-private, babel-plugin-syntax-decimal, babel-plugin-syntax-import-reflection, babel-standalone
  • #​16809 Archive syntax-import-reflection and syntax-decimal (@​nicolo-ribaudo)
• babel-generator
  • #​16779 Simplify logic for [no LineTerminator here] before nodes (@​nicolo-ribaudo)

🏃‍♀️ Performance

• babel-plugin-transform-typescript
  • #​16875 perf: Avoid extra cloning of namespaces (@​liuxingbaoyu)
• babel-types
  • #​16842 perf: Improve @​babel/types builders (@​liuxingbaoyu)
  • #​16828 Only access BABEL_TYPES_8_BREAKING at startup (@​nicolo-ribaudo)

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