High
CVSS 7.5 Business Logic Code4rena
Disclosure
Bridge Fee Quoted From User-Supplied Slippage Minimum
Router quotes bridge fee using attacker-controlled minTrustOut but bridges post-swap amountOut, causing underpaid fees or reverts.
- Target
- Ethereum Attestation Protocol
- Category
- Business Logic
- Channel
- Code4rena
- Disclosed
- 2026-03
Redaction note
Vendor identity withheld.
This finding is documented here as part of MemCyber’s public disclosure record. The vendor has been anonymized to a sector and region descriptor. Full technical detail — including root cause, reproducible proof-of-concept, remediation guidance, and vendor attribution where granted — is available to qualified prospects under NDA.
Coordinated disclosure
How we handled it.
- Reported to the vendor via Code4rena with a reproducible proof-of-concept.
- Triage + remediation window coordinated with the vendor security team.
- Fix verified before any public reference.
- This record published only after the embargo period closed.