PT-2026-120159 · Vyperlang · Vyper

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CVE-2021-48018

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Published

2026-10-21

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Updated

2026-10-21

CVSS v3.1

7.4

High

VectorAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Vyper from 0.2.13 before 0.2.15 allocates storage slots for @nonreentrant reentrancy locks at the same locations as contract storage variables. When a function using @nonreentrant is called, setting the lock overwrites the overlapping storage variable, corrupting contract state and breaking the contract's intended logic.

Fix

Memory Corruption

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Weakness Enumeration

Related Identifiers

CVE-2021-48018

Affected Products

Vyper