Synthetix

Back to Explore Synthetix | Onchain custody. Offchain performance. Perpetual futures that don't make you choose between security and speed. ETH Defi DAO DEX Perpetuals Staking Solidity JavaScript Maximum Bounty $100,000 Live Since 05 March 2021 Last Updated 21 June 2026 PoC Required Submit a Bug Information Scope Resources Rewards Synthetix provides rewards in USD on Ethereum , denominated in USD. Rewards by Threat Level Smart Contract Critical Flat: $100,000 Primacy of Rules High Flat: $50,000 Primacy of Rules Critical Reward Calculation Mainnet assets: Reward amount is 10 % of the funds directly affected up to a maximum of: $100,000 Websites and Applications Critical Flat: $30,000 Primacy of Rules High Flat: $10,000 Primacy of Rules Medium Flat: $1,000 Primacy of Rules Low Flat: $1,000 Primacy of Rules Critical Reward Calculation All other impacts that are classified as Critical will be rewarded a flat amount of: $3,000 The rest of the severity levels are paid out according to the Impact in Scope table. Rewards Body Rewards are distributed according to the impact the vulnerability could otherwise cause based on the Impacts in Scope table further below. Reward Calculation for Critical Level Reports For critical Smart Contract bugs, the reward amount is 10% of the funds directly affected up to a maximum of USD $100,000 . The calculation of the amount of funds at risk is based on the time and date the bug report is submitted. However, a minimum reward of USD $10,000 is to be rewarded in order to incentivize security researchers against withholding a bug report. For critical web/app bugs, the reward amount is 10% of the funds directly affected up to a maximum of USD $30,000 . The calculation of the amount of funds at risk is based on the time and date the bug report is submitted. However, a minimum reward of USD $1,000 is to be rewarded in order to incentivize security researchers against withholding a bug report. Repeatable Attack Limitations In cases of smart contract vulnerabilities whereby the attacks can be repeated at certain time intervals, if the attack can be stopped by a configuration change, the total value-at-risk from the consecutive attacks is computed by adding up the losses incurred and applying the below discount factors: Time Since Attack 1 │ Discount Factor 0 to 15 minutes │ 0% 15 to 30 minutes │ 25% 30 to 60 minutes │ 50% 60 to 120 minutes │ 75%

120 minutes │ 100% If the attack cannot be stopped by configuration changes, the discount factors are adjusted by 50% (i.e. 0% / 12.5% / 25% … ), with the terminal discount factor being 100% at 4 hours (from the initial attack). Proof of Concept (PoC) Requirements A PoC is required for the following severity levels: Critical High All PoCs submitted must comply with the Immunefi-wide PoC Guidelines and Rules . Bug report submissions without a PoC when a PoC is required will not be provided with a reward. Reward Payment Terms Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System v. 2.3 . This is a simplified 4-level scale. The development of this scale took into consideration multiple factors that may affect a vulnerability and its likelihood of exploitation, but finalizes them largely by the impact that they cause. The table below is mostly concerned with the consequence of a successful exploit. Keep in mind that if the exploit requires elevated privileges or uncommon user interaction, the level of the bug may be downgraded to reflect that or rejected. Goodwill Payments This applies to the following severity and asset levels: Smart Contract - Low Web/App - Medium Web/App - Low Synthetix is willing to offer discretionary “Goodwill Payments” for any bugs that fall under these categories and affect TVL <$1,000 , Furthermore, if the value of the assets at risk cannot be estimated, then the bounty payment would be discretionary based on goodwill terms. View impacts in scope Program Overview Synthetix is a perpetual futures exchange built on a hybrid architecture: user collateral is held on-chain in an audited, role-governed custody contract, while order matching, margining, funding, and liquidations run on a high-performance off-chain system. This lets traders get centralized-exchange speed without giving up on-chain custody of their funds. This bug bounty program covers the on-chain custody layer — the deposit contract and its associated vault and registry contracts that hold and move user funds. Off-chain components are not explicitly covered by this program; however, valid disclosures affecting off-chain systems will be reviewed and may be compensated on a case-by-case basis depending on severity and impact. Contract source and deployed addresses are listed in the Assets in Scope table and the Resources section at the bottom of the program. For more information about Synthetix, please visit https://synthetix.io/ . Synthetix provides rewards in USDC. For more details about the payment process, please view the Rewards by Threat Level section further below. Primacy of Impact vs Primacy of Rules Synthetix adheres to the Primacy of Rules Immunefi Standard Badge Synthetix has satisfied the requirements for the Immunefi Standard Badge, which is given to projects that adhere to our best practices. KYC not required No KYC information is required for payout processing. Proof of Concept Proof of concept is always required for all severities. Responsible Publication Category 3: Approval Required Prohibited Activities Default prohibited activities Any testing on mainnet or public testnet deployed code; all testing should be done on local-forks of either public testnet or mainnet Any testing with pricing oracles or third-party smart contracts Attempting phishing or other social engineering attacks against our employees and/or customers Any testing with third-party systems and applications (e.g. browser extensions) as well as websites (e.g. SSO providers, advertising networks) Any denial of service attacks that are executed against project assets Automated testing of services that generates significant amounts of traffic Public disclosure of an unpatched vulnerability in an embargoed bounty Any other actions prohibited by the Immunefi Rules Feasibility Limitations The project may be receiving reports that are valid (the bug and attack vector are real) and cite assets and impacts that are in scope, but there may be obstacles or barriers to executing the attack in the real world. In other words, there is a question about how feasible the attack really is. Conversely, there may also be mitigation measures that projects can take to prevent the impact of the bug, which are not feasible or would require unconventional action and hence, should not be used as reasons for downgrading a bug's severity. Therefore, Immunefi has developed a set of feasibility limitation standards which by default states what security researchers, as well as projects, can or cannot cite when reviewing a bug report. Chain Rollbacks Pre-Impact Bug Monitoring Attack Investment Amount Attacks With A Financial Risk To The Attacker When Is An Impactful Attack Downgraded To Griefing? Submit a Bug Total Assets in Scope 6