LABUBU/OLPC Hack

TOTAL LOST $1.1M
Medium Decimal Miscalculation bsc
Affected Chain bsc Incident surface
Recovered - No recovery reported
All-Time Rank #967 By amount stolen
Year 2026 Incident year

Incident Report

Protocol / Project LABUBU/OLPC
Date of Incident
Affected Chain(s) bsc
Attack Technique Decimal Miscalculation
Classification Token & Share Accounting

What the Attacker Needed to Succeed

Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.

Technical Knowledge Deep understanding of decimal miscalculation and Solidity and EVM internals
Capital Required Seed capital to cover gas and initial position setup
On-Chain Access Ability to interact with bsc smart contracts and deploy a custom exploit contract
Protocol Analysis Identification of the exploitable vulnerability in LABUBU/OLPC's contract logic - root cause: token & share accounting
Execution Speed Precise transaction ordering and timing to exploit the vulnerability within a single atomic block
Obfuscation Plan A strategy to launder and move stolen funds - typically through mixers, cross-chain bridges, or decentralized DEX swaps to resist tracing

What Auditors Should Check

Could this have been caught in audit? Likely, with a thorough Decimal Miscalculation audit checklist and test coverage

If you're auditing a protocol with similar architecture to LABUBU/OLPC, these are the critical security checks that could have prevented this incident (June 2026).

  • Verify all logic paths related to Decimal Miscalculation are guarded by proper access controls and input validation
  • Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs

Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.

Free Trial
Browse all hacks

These hacks used the same attack technique. Understanding the pattern helps prevent future exploits.

AARK (Aark Digital) $1.9M
Decimal Miscalculation

Learn to Prevent the Next LABUBU/OLPC

The LABUBU/OLPC hack is one of many attacks that skilled auditors are trained to detect before deployment. Master real exploit patterns and defense techniques with hands-on Web3 security training.

Start Free Trial Browse Attack Library
Recreate exploit patterns safely Free Trial