Vulnerability library
Security checkJune 19, 2026

ts-deepmerge: Prototype Method Override leads to DoS

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Medium severitynpmts-deepmerge

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Description

Versions of the package ts-deepmerge before 8.0.0 are vulnerable to Uncaught Exception due to the improper handling of built-in Object.prototype methods (such as toString, valueOf).

Recommendation

Update the ts-deepmerge package to the latest compatible version. Followings are version details:

  • Affected version(s): < 8.0.0
  • Patched version(s): 8.0.0

References

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Related Issues

See something that needs correcting? Let us knowUpdated June 19, 2026