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Weakness (CWE) CWE-1321 Improperly Controlled Modification of Object Prototype Attributes 1 CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes 1

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TI-2026-39795 CVE-2026-55091 · GHSA-hp36-v28f-w3r4

flat-to-nested: Prototype pollution in flat-to-nested convert() via proto parent/id key

Priority LOW 39

flat-to-nested converts a hierarchy from a flat representation to a nested representation.

CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00497 · Published 2026-09-14 · Fixed in 1.1.2 CWE-1321

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Vulnerabilities

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flat-to-nested: Prototype pollution in flat-to-nested convert() via __proto__ parent/id key

flat-to-nested: Prototype pollution in flat-to-nested convert() via proto parent/id key