Update dependency @babel/core to v7.29.6 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@babel/core (source)	7.28.5 → 7.29.6

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@​babel/core: Arbitrary File Read via sourceMappingURL Comment

CVE-2026-49356 / GHSA-4x5r-pxfx-6jf8

More information

Details

Impact

Using @babel/core to compile maliciously crafted code can allow ab attacker to read any source map from the system that is running Babel, if these conditions are all true:

• the attacker controls the input source code
• the attacker can read the output source code
• the attacker knows the path of the source map file that they want to read

Users that only compile trusted code are not impacted.

Patches

The vulnerability has been fixed in @babel/core@7.29.6 and @babel/core@8.0.0-rc.6.

Workarounds

Callers can mitigate the issue without upgrading by setting inputSourceMap: false in their Babel options.

Callers can also manually extract the #sourceMappingURL comment from the input source code, validate whether the source map that it links to is allowed to be read, and if it is pass an object to inputSourceMap (passing false when it's not).

Credits

Thanks Teodor-Cristian Radoi for reporting the vulnerability.

Severity

• CVSS Score: 3.2 / 10 (Low)
• Vector String: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

References

• https://github.com/babel/babel/security/advisories/GHSA-4x5r-pxfx-6jf8
• https://babeljs.io/docs/options#inputsourcemap
• https://nvd.nist.gov/vuln/detail/CVE-2026-49356
• https://github.com/advisories/GHSA-4x5r-pxfx-6jf8

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

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Release Notes

babel/babel (@​babel/core)

v7.29.6

Compare Source

v7.29.6 (2026-05-25)

🐛 Bug Fix

• babel-generator
  • #​18014 Catchup source map position in preserveFormat (@​nicolo-ribaudo)
• babel-core
  • #​18001 [7.x packport]Improve input source map handling (@​JLHwung)
• babel-core, babel-generator
  • #​17998 Preserve original identifier names from input sourcemaps (#​17992) (@​Andarist)

Committers: 3

• Huáng Jùnliàng (@​JLHwung)
• Mateusz Burzyński (@​Andarist)
• Nicolò Ribaudo (@​nicolo-ribaudo)

v7.29.0

Compare Source

v7.29.0 (2026-01-31)

Thanks @​simbahax for your first PR!

🚀 New Feature

• babel-types
  • #​17750 [7.x backport] Add attributes import declaration builder (@​JLHwung)
• babel-standalone
  • #​17663 [7.x backport] feat(standalone): export async transform (@​JLHwung)
  • #​17725 [7.x backport] feat: read standalone targets from data-targets (@​JLHwung)

🐛 Bug Fix

• babel-parser
  • #​17765 fix(parser): correctly parse type assertions in extends clause (@​nicolo-ribaudo)
  • #​17723 [7.x backport] fix(parser): improve super type argument parsing (@​JLHwung)
• babel-traverse
  • #​17708 fix(traverse): provide a hub when traversing a File or Program and no parentPath is given (@​simbahax)
• babel-plugin-transform-block-scoping, babel-traverse
  • #​17737 [7.x backport] fix: Rename switch discriminant references when body creates shadowing variable (@​magic-akari)

🏃‍♀️ Performance

• babel-generator, babel-runtime-corejs3
  • #​17642 [Babel 7] Improve generator performance (@​liuxingbaoyu)

Committers: 6

• David (@​simbahax)
• Huáng Jùnliàng (@​JLHwung)
• Nicolò Ribaudo (@​nicolo-ribaudo)
• @​liuxingbaoyu
• @​magic-akari

v7.28.6

Compare Source

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.80%. Comparing base (caa3566) to head (f7130b7).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2864   +/-   ##
=======================================
  Coverage   81.80%   81.80%           
=======================================
  Files         149      149           
  Lines        2957     2957           
  Branches      928      928           
=======================================
  Hits         2419     2419           
  Misses        504      504           
  Partials       34       34           

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