CVE-2021-46320

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-665

Affected software

No affected versions have been published.

Timeline

Published
Feb 4, 2022
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-463219.8Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer overflow in the wifiBasicCfg module. This vulnerabilitCVE-2021-463225.5Duktape v2.99.99 was discovered to contain a SEGV vulnerability via the component duk_push_tval in duktape/duk_api_stack.c.CVE-2021-463235.5Espruino 2v11.251 was discovered to contain a SEGV vulnerability via src/jsinteractive.c in jsiGetDeviceFromClass.CVE-2021-463247.8Espruino 2v11.251 was discovered to contain a stack buffer overflow via src/jsvar.c in jsvNewFromString.CVE-2021-463257.8Espruino 2v10.246 was discovered to contain a stack buffer overflow via src/jsutils.c in vcbprintf.CVE-2021-463267.8Moddable SDK v11.5.0 was discovered to contain a heap-buffer-overflow via the component __asan_memcpy.CVE-2021-463275.5Moddable SDK v11.5.0 was discovered to contain a SEGV vulnerability via xs/sources/xsArray.c in fx_Array_prototype_sort.CVE-2021-463287.8Moddable SDK v11.5.0 was discovered to contain a heap-buffer-overflow via the component __libc_start_main.CVE-2021-463295.5Moddable SDK v11.5.0 was discovered to contain a SEGV vulnerability via the component _fini.CVE-2021-463305.5Moddable SDK v11.5.0 was discovered to contain a SEGV vulnerability via xs/sources/xsDataView.c in fx_ArrayBuffer_prototype_concat.CVE-2021-463315.5Moddable SDK v11.5.0 was discovered to contain a SEGV vulnerability via xs/sources/xsProxy.c in fxProxyGetPrototype.CVE-2021-463327.8Moddable SDK v11.5.0 was discovered to contain a heap-buffer-overflow via xs/sources/xsDataView.c in fxUint8Getter.
CVE-2021-46320: High severity, CVSS 7.5 | Vulnix