Is CVE-2021-48018 being exploited?

No public exploit is currently tracked.

How severe is CVE-2021-48018?

CVE-2021-48018 has a CVSS v3 severity of HIGH (7.4).

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CVE-2021-48018

Description

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.