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Propeller Heads Turbine

Type

Security review

Client

Propeller Heads

Date

2026-03

Domain

AppSec

Effort

8 wks

Section

Technology Product Reviews

Trail of Bits's security review of Propeller Heads (Mar 2026) identified 21 issues: 3 high, 6 medium, 4 low, and 8 informational.

Findings · 21

  1. 1 Documentation for running tests needs to be updated Informational
  2. 2 serialize_struct argument does not match number of serialize_field calls Informational
  3. 3 PermitSingle and PermitBatch’s From implementations can panic in U48::from Informational
  4. 4 u256_to_naive_datetime can produce values before UNIX epoch Low
  5. 5 Invalid bit-length comparison in reduce_precision Medium
  6. 6 Recursive price filtering allows oracle threshold bypass Medium
  7. 7 SIWE message version field is not validated Low
  8. 8 U256 arithmetic errors silenced with unwrap_or Informational
  9. 9 Authentication credentials leak when transmitted over unencrypted HTTP Medium
  10. 10 Potential integer overflow in function scale_up_input High
  11. 11 ECDSA signature malleability Low
  12. 12 Missing validation of user balance vector length Low
  13. 13 Missing block number validation in pool state updates Informational
  14. 14 Race conditions are present in filesystem operations Informational
  15. 15 Unable to safely change hook address High
  16. 16 Unbounded intent array enables denial of service of settlement system High
  17. 17 Nonstandard ERC-20 tokens cause swap failures due to unsafe transfer checks Medium
  18. 18 Insufficient pre-execution validation enables single-user actions to cause batch settlement failures Medium
  19. 19 Remove liquidity operations lack slippage protection, enabling unfavorable token ratios Medium
  20. 20 Off-by-one-second discrepancy in speedbump enforcement between on-chain and off-chain paths Informational
  21. 21 Missing minimum buy amount validation allows users to receive less than specified minimum Informational

Findings extracted from the published report PDF. See the full report below for details and remediation.

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