Hack history / 2026 / Hack or exploit
Fluid Lending
Hack or exploit on May 31, 2026 · Private Key Compromised
SOURCES AGREE ON DATE AND LOSS · 2 SOURCES
Lost
$215K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,458
among thefts by dollars lost
What happened
An attacker compromised operational keys used exclusively by Fluid’s Merkle rewards distribution infrastructure. The attacker used these permissions to submit and approve fraudulent reward allocations, allowing them to claim approximately 125,109 FLUID, 51,946 GHO, and a small amount of cbBTC. The incident was isolated to reward distribution contracts and did not compromise Fluid’s core protocol contracts, lending markets, or user deposits
Details
- Date
- May 31, 2026
- Kind
- Hack or exploit
- Method
- Private Key Compromised
- How in
- Keys, accounts and infrastructure
- Target
- DeFi protocol
- Chains
- Ethereum
Reported by
Related incidents
Secured Finance Lending 2026 · Hack or exploit · $104K
Moonwell Lending 2026 · Hack or exploit · $8.7M
Surf Lending 2026 · Hack or exploit · undisclosed
DefiTuna Lending 2026 · Hack or exploit · $580K
UdonFi Lending 2026 · Hack or exploit · undisclosed
Moonwell Lending 2026 · Hack or exploit · $8.7M
Surf Lending 2026 · Hack or exploit · undisclosed
DefiTuna Lending 2026 · Hack or exploit · $580K
UdonFi Lending 2026 · Hack or exploit · undisclosed
Cite this page
SwanBluechip, "Fluid Lending hack, May 31, 2026: $215K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht2b3b9690d9/ (data as of 2026-11-01).