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JavaScript type confusion: Bypassed input validation (and how to remediate)

ID: ba8099c6-ef85-50c3-be97-79d27477fefa

STIX ID: report--ba8099c6-ef85-50c3-be97-79d27477fefa

Feed Name: Snyk Blog

Threat Score
35/100

Date Published: 2021-11-03

Date Updated: 2026-09-15

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**Executive summary:** This Snyk research blog examines JavaScript type-confusion attacks that can bypass input validation and sanitisation—demonstrating prototype pollution in object-path and an XSS bypass in edge.js—providing PoCs, responsible disclosure timelines, and recommended fixes for maintainers and developers.

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