CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NCVE-2021-46320
High (7.5) in openzeppelin openzeppelin. EPSS 1.2% chance of exploitation in the next 30 days. Fixed in @openzeppelin/contracts 4.4.1.
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.
Severity
- EPSS
- 1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
- CWE
- CWE-665
- Published
- Modified
- Record from
- the NVD, synced
Affected
- openzeppelin:openzeppelin
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-88g8-f5mf-f5rj | npm | @openzeppelin/contracts | <4.4.1 | 4.4.1 |
| GHSA-9c22-pwxw-p6hx | npm | @openzeppelin/contracts | >=3.2.0 <4.4.1 | 4.4.1 |
| GHSA-9c22-pwxw-p6hx | npm | @openzeppelin/contracts-upgradeable | >=3.2.0 <4.4.1 | 4.4.1 |