CVE-2026-73645
CVE-2026-73645 · OpenZeppelin Confidential Contracts ERC7984ERC20Wrapper: once a wrapper is filled, subsequent wrap requests do not revert and result in loss of funds.
This page contains facts from public vulnerability sources. Check the original advisory before updating.
OpenZeppelin Confidential Contracts is an experimental library for developing applications on the Zama fhEVM. Prior to 0.3.1, the ERC7984 contract tracked confidential total supply with an euint64 value, and an overflowing internal _mint operation could fail silently. The wrap and onTransferReceived functions in contracts/token/ERC7984/extensions/ERC7984ERC20Wrapper.sol did not handle that failure, so a user could transfer the underlying token without receiving the corresponding confidential wrapped token. With the default rate(), the wrapper fills after approximately 18.4 trillion tokens, and subsequent wrapping requests can cause loss of funds. This issue is fixed in version 0.3.1.
CVSS 6.6 · Medium · EPSS 0.5% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
openzeppelin-confidential-contracts
- Versions
- < 0.3.1: Affected
No fix published
@openzeppelin/confidential-contracts npm
- Affected ranges
- SEMVER: < 0.3.1
Update to 0.3.1
Original sources
- https://github.com/OpenZeppelin/openzeppelin-confidential-contracts/security/advisories/GHSA-hqf9-8xv5-x8xw
- https://github.com/OpenZeppelin/openzeppelin-confidential-contracts/pull/271
- https://github.com/OpenZeppelin/openzeppelin-confidential-contracts/commit/c620d4386021dde63ae3ea1507dee8543791134a
- https://github.com/OpenZeppelin/openzeppelin-confidential-contracts/releases/tag/v0.3.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-73645