Polymarket
@polymarketLive
Maximum reward
$5,000,000
Severity
Max. Reward
Critical$5,000,000
High$500,000
Medium$50,000
Low$5,000
Deposit required
$5
Findings submitted
99
Start date
12 Apr 2026
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Log inIn scope
Severity
Min and Max Reward
Critical$50,000 to $250,000
High
$10,000 to $75,000
Medium
$5,000 to $25,000
Low
$1,000 to $5,000
InformationalDiscretionary
Web & App in scope
Name | Description | Asset |
|---|---|---|
| Home Page | Polymarket's Home Page |
Out of scope
Smart Contract Specific
- Incorrect data supplied by third party oracles
- Not to exclude oracle manipulation/flash loan attacks
- Impacts requiring basic economic and governance attacks (e.g. 51% attack)
- Lack of liquidity impacts
- Impacts from Sybil attacks
- Impacts involving centralization risks
- Vulnerabilities in the Gnosis ConditionalTokens contract that do not specifically arise from or affect Polymarket's integration patterns (general Gnosis CTF bugs should be reported to Gnosis)
- Issues requiring >$50M in capital to exploit with no practical economic incentive
- Payout rounding precision loss in ConditionalTokens.redeemPositions() below $1 per redemption (known design tradeoff of integer division)
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
- Using VPN to bypass geo-restrictions
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
Known Issues
- Unfixed vulnerabilities from previous audits listed at the Polymarket contract-security repository
- Audit reports and any unfixed vulnerabilities mentioned in these reports are not eligible for a reward:
- Ctf-Exchange-v2: https://github.com/Polymarket/ctf-exchange-v2/tree/main/audits
- Issues already recorded as self-reported bug submissions on the Cantina platform
- Issues already submitted in Immunefi's bounty program
- Known centralization risks in Auth modules (admin can add/remove other admins) — this is by design
- ConditionalTokens uses Solidity ^0.5.1 without native overflow protection (SafeMath is used where needed) — this is a known design choice of the Gnosis CTF
- Single oracle per condition in ConditionalTokens with no on-chain dispute mechanism — disputes are handled off-chain via UMA's Optimistic Oracle integration
Other Out-of-Scope Targets
In addition to the above, all items in the Cantina Bug Bounty Out-of-Scope Policy apply.