Hack history / 2026 / Hack or exploit
Haedal Vault
Hack or exploit on Jun 9, 2026 · Smart Contract Vulnerability
ONE SOURCE · 1 SOURCE
Lost
$915K
dollars at the time
Returned
none listed
as the sources state it
Rank
#964
among thefts by dollars lost
What happened
Haedal Protocol’s Vault pools on Sui suffered an exploit due to a hidden cross-version logic flaw from a 2025 upgrade. The attacker used deprecated old deposit paths to mint inflated LP shares and redeemed them via new paths for excess underlying assets, causing ~$915k in direct losses. Haedal has paused the affected contracts, will fully compensate users, and is preparing a patched upgrade.
Details
- Date
- Jun 9, 2026
- Kind
- Hack or exploit
- Method
- Smart Contract Vulnerability
- How in
- Smart contract bug
- Target
- not stated
- Chains
- not stated
After the theft
- Victims reimbursed
- yes, amount not stated
“Haedal has paused the affected contracts, will fully compensate users, and is preparing a patched upgrade.” (SlowMist Hacked)
Reported by
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Cite this page
SwanBluechip, "Haedal Vault hack, Jun 9, 2026: $915K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht0c40447bbf/ (data as of 2026-10-31).