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CVE-2023-49798 Details

Description

OpenZeppelin Contracts is a library for smart contract development. A merge issue when porting the 5.0.1 patch to the 4.9 branch caused a line duplication. In the version of `Multicall.sol` released in `@openzeppelin/[email protected]` and `@openzeppelin/[email protected]`, all subcalls are executed twice. Concretely, this exposes a user to unintentionally duplicate operations like asset transfers. The duplicated delegatecall was removed in version 4.9.5. The 4.9.4 version is marked as deprecated. Users are advised to upgrade. There are no known workarounds for this issue.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/OpenZeppelin/openzeppelin-contracts/commit/88ac712e06832bce73b41e8166cded2729e25205	CVE	Patch
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-699g-q6qh-q4v8	CVE	Vendor Advisory
https://github.com/OpenZeppelin/openzeppelin-contracts/commit/88ac712e06832bce73b41e8166cded2729e25205	[email protected]	Patch
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-699g-q6qh-q4v8	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-670	Always-Incorrect Control Flow Implementation	[email protected]

Affected Products

Product	Versions
openzeppelin contracts	4.9.4
CPE cpe:2.3:a:openzeppelin:contracts:4.9.4:::::node.js:: Remediation No remediation found in references.
openzeppelin contracts upgradeable	4.9.4
CPE cpe:2.3:a:openzeppelin:contracts_upgradeable:4.9.4:::::node.js:: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Dec 13, 2023	Initial Analysis	[email protected]
Dec 9, 2023	New CVE Received	[email protected]