Hack history / 2026 / Hack or exploit
Wanchain
Hack or exploit on Jul 21, 2026 · Signature Verification Flaw
SOURCES AGREE ON DATE AND LOSS · 3 SOURCES
Lost
$10M
sources: $9M to $10M
Returned
none listed
as the sources state it
Rank
#295
among thefts by dollars lost
What happened
On July 21, 2026, Wanchain's Cardano-BNB Chain bridge was drained of ~515M NIGHT tokens. The TreasuryCheck validator concatenated 14 variable-length fields without separators, allowing a signature authorizing ~3,110 NIGHT to be reused for vastly larger redemptions.
Details
- Date
- Jul 21, 2026
- Kind
- Hack or exploit
- Method
- Signature Verification Flaw
- How in
- Smart contract bug
- Target
- Chain
- Chains
- Cardano
After the theft
- Frozen
- yes, amount not stated
“Multiple exchanges froze related funds, and NIGHT price dropped sharply before partial recovery.” (SlowMist Hacked)
Related incidents
Gnosis Pay 2026 · Hack or exploit · $1.5M
Lumi Finance 2026 · Hack or exploit · $270K
Nimiq 2026 · Hack or exploit · $50K
Lixir Finance 2026 · Hack or exploit · $12K
Mure 2026 · Hack or exploit · $12K
Lumi Finance 2026 · Hack or exploit · $270K
Nimiq 2026 · Hack or exploit · $50K
Lixir Finance 2026 · Hack or exploit · $12K
Mure 2026 · Hack or exploit · $12K
Cite this page
SwanBluechip, "Wanchain hack, Jul 21, 2026: $10M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht0875f27345/ (data as of 2026-10-31).