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WS-2021-0375

Date: August 19, 2025

An issue was found in the "@openzeppelin/contracts-upgradeable" NPM package before 4.3.2. Upgradeable contracts using UUPSUpgradeable may be vulnerable to an attack affecting uninitialized implementation contracts.

Language: JS

Severity Score

Related Resources (4)

https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commit/5c21639dc39b9062310ee3ca30aa2c3a4feccd8f
https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable
https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/security/advisories/GHSA-q4h9-46xg-m3x9
https://www.mend.io/vulnerability-database/WS-2021-0375

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): HIGH

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