Vulnerability library
Security checkApril 23, 2026

Deep Merge is Vulnerable to Prototype Pollution Through Lack of Sanitization

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Medium severitynpm@brikcss/merge

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Description

A Prototype Pollution vulnerability was determined in brikcss merge up to 1.3.0. Executing a manipulation of the argument proto/constructor.prototype/prototype can lead to improperly controlled modification of object prototype attributes. The attack may be performed from remote.

Recommendation

No fix is available yet. Followings are affected versions:

  • <= 1.3.1

References

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Related Issues

See something that needs correcting? Let us knowUpdated April 23, 2026