ECDSA: recover(bytes32,bytes) and tryRecover(bytes32,bytes) no longer accept compact signatures to prevent malleability. Compact signature support remains available using recover(bytes32,bytes32,bytes32) and tryRecover(bytes32,bytes32,bytes32).
v4.7.2
:warning: This is a patch for three issues, including a high severity issue in GovernorVotesQuorumFraction. For more information visit the security advisories (1, 2, 3).
GovernorVotesQuorumFraction: Fixed quorum updates so they do not affect past proposals that failed due to lack of quorum. (#3561)
ERC165Checker: Added protection against large returndata. (#3587)
LibArbitrumL2, CrossChainEnabledArbitrumL2: Fixed detection of cross-chain calls for EOAs. Previously, calls from EOAs would be classified as cross-chain calls. (#3578)
v4.7.1
:warning: This is a patch for a medium severity issue affecting SignatureChecker and a high severity issue affecting ERC165Checker. For more information visit the security advisories (1, 2).
SignatureChecker: Fix an issue that causes isValidSignatureNow to revert when the target contract returns ill-encoded data. (#3552)
ERC165Checker: Fix an issue that causes supportsInterface to revert when the target contract returns ill-encoded data. (#3552)
v4.7.0
TimelockController: Migrate _call to _execute and allow inheritance and overriding similar to Governor. (#3317)
CrossChainEnabledPolygonChild: replace the require statement with the custom error NotCrossChainCall. (#3380)
ERC4626: add an extension of ERC20 that implements the ERC4626 Tokenized Vault Standard. (#3171)
SafeERC20: add safePermit as mitigation against phantom permit functions. (#3280)
Math: add a mulDiv function that can round the result either up or down. (#3171)
Math: Add a sqrt function to compute square roots of integers, rounding either up or down. (#3242)
Strings: add a new overloaded function toHexString that converts an address with fixed length of 20 bytes to its not checksummed ASCII string hexadecimal representation. (#3403)
EnumerableMap: add new UintToUintMap map type. (#3338)
EnumerableMap: add new Bytes32ToUintMap map type. (#3416)
SafeCast: add support for many more types, using procedural code generation. (#3245)
MerkleProof: add multiProofVerify to prove multiple values are part of a Merkle tree. (#3276)
MerkleProof: add calldata versions of the functions to avoid copying input arrays to memory and save gas. (#3200)
Initializable: refactored implementation of modifiers for easier understanding. (#3450)
Proxies: remove runtime check of ERC1967 storage slots. (#3455)
Breaking changes
Initializable: functions decorated with the modifier reinitializer(1) may no longer invoke each other.
v4.6.0
crosschain: Add a new set of contracts for cross-chain applications. CrossChainEnabled is a base contract with instantiations for several chains and bridges, and AccessControlCrossChain is an extension of access control that allows cross-chain operation. (#3183)
AccessControl: add a virtual _checkRole(bytes32) function that can be overridden to alter the onlyRole modifier behavior. (#3137)
EnumerableMap: add new AddressToUintMap map type. (#3150)
EnumerableMap: add new Bytes32ToBytes32Map map type. (#3192)
ERC20FlashMint: support infinite allowance when paying back a flash loan. (#3226)
ECDSA: recover(bytes32,bytes) and tryRecover(bytes32,bytes) no longer accept compact signatures to prevent malleability. Compact signature support remains available using recover(bytes32,bytes32,bytes32) and tryRecover(bytes32,bytes32,bytes32).
4.7.2
LibArbitrumL2, CrossChainEnabledArbitrumL2: Fixed detection of cross-chain calls for EOAs. Previously, calls from EOAs would be classified as cross-chain calls. (#3578)
GovernorVotesQuorumFraction: Fixed quorum updates so they do not affect past proposals that failed due to lack of quorum. (#3561)
ERC165Checker: Added protection against large returndata. (#3587)
4.7.1
SignatureChecker: Fix an issue that causes isValidSignatureNow to revert when the target contract returns ill-encoded data. (#3552)
ERC165Checker: Fix an issue that causes supportsInterface to revert when the target contract returns ill-encoded data. (#3552)
4.7.0 (2022-06-29)
TimelockController: Migrate _call to _execute and allow inheritance and overriding similar to Governor. (#3317)
CrossChainEnabledPolygonChild: replace the require statement with the custom error NotCrossChainCall. (#3380)
ERC4626: add an extension of ERC20 that implements the ERC4626 Tokenized Vault Standard. (#3171)
SafeERC20: add safePermit as mitigation against phantom permit functions. (#3280)
Math: add a mulDiv function that can round the result either up or down. (#3171)
Math: Add a sqrt function to compute square roots of integers, rounding either up or down. (#3242)
Strings: add a new overloaded function toHexString that converts an address with fixed length of 20 bytes to its not checksummed ASCII string hexadecimal representation. (#3403)
EnumerableMap: add new UintToUintMap map type. (#3338)
EnumerableMap: add new Bytes32ToUintMap map type. (#3416)
SafeCast: add support for many more types, using procedural code generation. (#3245)
MerkleProof: add multiProofVerify to prove multiple values are part of a Merkle tree. (#3276)
MerkleProof: add calldata versions of the functions to avoid copying input arrays to memory and save gas. (#3200)
Initializable: refactored implementation of modifiers for easier understanding. (#3450)
Proxies: remove runtime check of ERC1967 storage slots. (#3455)
Breaking changes
Initializable: functions decorated with the modifier reinitializer(1) may no longer invoke each other.
4.6.0 (2022-04-26)
crosschain: Add a new set of contracts for cross-chain applications. CrossChainEnabled is a base contract with instantiations for several chains and bridges, and AccessControlCrossChain is an extension of access control that allows cross-chain operation. (#3183)
AccessControl: add a virtual _checkRole(bytes32) function that can be overridden to alter the onlyRole modifier behavior. (#3137)
EnumerableMap: add new AddressToUintMap map type. (#3150)
EnumerableMap: add new Bytes32ToBytes32Map map type. (#3192)
ERC20FlashMint: support infinite allowance when paying back a flash loan. (#3226)
ERC20Wrapper: the decimals() function now tries to fetch the value from the underlying token instance. If that calls revert, then the default value is used. (#3259)
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Bumps @openzeppelin/contracts-upgradeable from 4.3.1 to 4.7.3.
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