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CVE-2023-40014 Details

Description

OpenZeppelin Contracts is a library for secure smart contract development. Starting in version 4.0.0 and prior to version 4.9.3, contracts using `ERC2771Context` along with a custom trusted forwarder may see `_msgSender` return `address(0)` in calls that originate from the forwarder with calldata shorter than 20 bytes. This combination of circumstances does not appear to be common, in particular it is not the case for `MinimalForwarder` from OpenZeppelin Contracts, or any deployed forwarder the team is aware of, given that the signer address is appended to all calls that originate from these forwarders. The problem has been patched in v4.9.3.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/OpenZeppelin/openzeppelin-contracts/commit/9445f96223041abf2bf08daa56f8da50b674cbcd	CVE	Patch
https://github.com/OpenZeppelin/openzeppelin-contracts/commit/e4435eed757d4309436b1e06608e97b6d6e2fdb5	CVE	Patch
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4481	CVE	PatchVendor Advisory
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4484	CVE	PatchVendor Advisory
https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.9.3	CVE	Release Notes
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-g4vp-m682-qqmp	CVE	Vendor Advisory
https://github.com/OpenZeppelin/openzeppelin-contracts/commit/9445f96223041abf2bf08daa56f8da50b674cbcd	[email protected]	Patch
https://github.com/OpenZeppelin/openzeppelin-contracts/commit/e4435eed757d4309436b1e06608e97b6d6e2fdb5	[email protected]	Patch
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4481	[email protected]	PatchVendor Advisory
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4484	[email protected]	PatchVendor Advisory
https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.9.3	[email protected]	Release Notes
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-g4vp-m682-qqmp	[email protected]	Vendor Advisory

see all 12 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-116	Improper Encoding or Escaping of Output	[email protected]

Affected Products

Product	Versions
openzeppelin openzeppelin contracts	>= 4.0.0, < 4.9.3
CPE cpe:2.3:a:openzeppelin:openzeppelin_contracts::::::node.js::* Remediation No remediation found in references.
openzeppelin openzeppelin contracts-upgradable	>= 4.0.0, < 4.9.3
CPE cpe:2.3:a:openzeppelin:openzeppelin_contracts-upgradable::::::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]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 23, 2023	Initial Analysis	[email protected]