CVE-2021-46320
HIGH7.5EPSS 0.52%Improper Initialization in OpenZeppelin
Published: 2/5/2022Modified: 3/13/2026
Also known as:GHSA-88g8-f5mf-f5rj
Description
In OpenZeppelin <=v4.4.0, initializer functions that are invoked separate from contract creation (the most prominent example being minimal proxies) may be reentered if they make an untrusted non-view external call. Once an initializer has finished running it can never be re-executed. However, an exception put in place to support multiple inheritance made reentrancy possible, breaking the expectation that there is a single execution.
Affected packages (1)
- npm/@openzeppelin/contractsfrom 0, < 4.4.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-46320
- PATCHhttps://github.com/OpenZeppelin/openzeppelin-contracts
- WEBhttps://github.com/OpenZeppelin/openzeppelin-contracts/pull/3006
- WEBhttps://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.4.1
- WEBhttps://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-9c22-pwxw-p6hx