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Synthetix

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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

Select the category you'd like to explore

Assets in Scope

Target
Name
Synthetix
Added on
15 July 2025
Target
Name
Governance website
Added on
21 June 2026
Target
Name
Exchange website
Added on
21 June 2026
Name
SynthetixDepositContract (Proxy) — user collateral custody + multi-stage withdrawals
Added on
21 June 2026
Name
SynthetixDepositContractLens — view-only batch query helper
Added on
21 June 2026
Name
PermissionsRegistry (Proxy) — self-sovereign (owner, delegatee, permission) registry
Added on
21 June 2026

Impacts in Scope

Impacts Body

Only the following impacts are accepted within this bug bounty program. All other impacts are not considered as in-scope, even if they affect something in the assets in scope table.

Severity
Critical
Title

Private key or private key generation leakage leading to unauthorized access to user funds

Severity
Critical
Title

Direct theft of user funds

Severity
Critical
Title

Malicious interactions with an already-connected wallet, such as:

  • Modifying transaction arguments or parameters
  • Substituting contract addresses
  • Submitting malicious transactions
Severity
Critical
Title

A loss of funds involving an attack that does not require any user action

Severity
Critical
Title

Manipulation of governance voting result deviating from voted outcome and resulting in a direct change from intended effect of original results

Severity
Critical
Title

Direct theft of any user funds, whether at-rest or in-motion, other than unclaimed yield

Severity
Critical
Title

Protocol insolvency

Severity
Critical
Title

Execute arbitrary system commands

Severity
Critical
Title

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)
Severity
Critical
Title

Subdomain takeover with already-connected wallet interaction

Severity
High
Title

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.
Severity
High
Title

Subdomain takeover without already-connected wallet interaction

Out of scope

Program's Out of Scope information
  • Security researchers from restricted countries, reference to the terms, are not eligible for bounties regardless of the scope of the vulnerability disclosure
    • Activities that violate the whitehat rules of engagement would result in revocation of the bounty regardless of the disclosure merit.
Default Out of Scope and rules

Web & App specific

  • Theoretical impacts without any proof or demonstration
  • Impacts involving attacks requiring physical access to the victim device
  • Impacts involving attacks requiring access to the local network of the victim
  • Reflected plain text injection (e.g. url parameters, path, etc.)
    • This does not exclude reflected HTML injection with or without JavaScript
    • This does not exclude persistent plain text injection
  • Any impacts involving self-XSS
  • Captcha bypass using OCR without impact demonstration
  • CSRF with no state modifying security impact (e.g. logout CSRF)
  • Impacts related to missing HTTP Security Headers (such as X-FRAME-OPTIONS) or cookie security flags (such as “httponly”) without demonstration of impact
  • Server-side non-confidential information disclosure, such as IPs, server names, and most stack traces
  • Impacts causing only the enumeration or confirmation of the existence of users or tenants
  • Impacts caused by vulnerabilities requiring un-prompted, in-app user actions that are not part of the normal app workflows
  • Lack of SSL/TLS best practices
  • Impacts that only require DDoS
  • UX and UI impacts that do not materially disrupt use of the platform
  • Impacts primarily caused by browser/plugin defects
  • Leakage of non sensitive API keys (e.g. Etherscan, Infura, Alchemy, etc.)
  • Any vulnerability exploit requiring browser bugs for exploitation (e.g. CSP bypass)
  • SPF/DMARC misconfigured records)
  • Missing HTTP Headers without demonstrated impact
  • Automated scanner reports without demonstrated impact
  • UI/UX best practice recommendations
  • Non-future-proof NFT rendering

All categories

  • Impacts requiring attacks that the reporter has already exploited themselves, leading to damage
  • Impacts caused by attacks requiring access to leaked keys/credentials
  • Impacts caused by attacks requiring access to privileged addresses (including, but not limited to: governance and strategist contracts) without additional modifications to the privileges attributed
  • Impacts relying on attacks involving the depegging of an external stablecoin where the attacker does not directly cause the depegging due to a bug in code
  • Mentions of secrets, access tokens, API keys, private keys, etc. in Github will be considered out of scope without proof that they are in-use in production
  • Best practice recommendations
  • Feature requests
  • Impacts on test files and configuration files unless stated otherwise in the bug bounty program
  • Impacts requiring phishing or other social engineering attacks against project's employees and/or customers