{"id":"CVE-2026-73645","sourceIdentifier":"security-advisories@github.com","published":"2026-08-13T18:18:20.277","lastModified":"2026-10-24T15:10:00.190","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"OpenZeppelin Confidential Contracts es una biblioteca experimental para desarrollar aplicaciones en la Zama fhEVM. Antes de la versión 0.3.1, el contrato ERC7984 rastreaba el suministro total confidencial con un valor euint64, y una operación interna _mint desbordante podría fallar silenciosamente. Las funciones wrap y onTransferReceived en contracts/token/ERC7984/extensions/ERC7984ERC20Wrapper.sol no manejaban ese fallo, por lo que un usuario podría transferir el token subyacente sin recibir el token envuelto confidencial correspondiente. Con la tasa predeterminada rate(), el ’wrapper’ se llena después de aproximadamente 18.4 billones de tokens, y las solicitudes de envoltura posteriores pueden causar la pérdida de fondos. Este problema está solucionado en la versión 0.3.1."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"OpenZeppelin","product":"openzeppelin-confidential-contracts","versions":[{"version":"< 0.3.1","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6.6,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"UNREPORTED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-14T17:41:19.442878Z","id":"CVE-2026-73645","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-190"}]}],"references":[{"url":"https://github.com/OpenZeppelin/openzeppelin-confidential-contracts/commit/c620d4386021dde63ae3ea1507dee8543791134a","source":"security-advisories@github.com"},{"url":"https://github.com/OpenZeppelin/openzeppelin-confidential-contracts/pull/271","source":"security-advisories@github.com"},{"url":"https://github.com/OpenZeppelin/openzeppelin-confidential-contracts/releases/tag/v0.3.1","source":"security-advisories@github.com"},{"url":"https://github.com/OpenZeppelin/openzeppelin-confidential-contracts/security/advisories/GHSA-hqf9-8xv5-x8xw","source":"security-advisories@github.com"}]}