Hack history / 2026 / Hack or exploit
Royal.io
Hack or exploit on Jun 23, 2026 · Incorrect Share Accounting
ATTACK TX CONFIRMED ON CHAINSOURCES AGREE ON DATE AND LOSS · 3 SOURCES
Lost
$263K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,373
among thefts by dollars lost
What happened
Royal.io's legacy royalties contract (Royal1155LD) on Polygon was exploited via a flash loan combined with 100 zero-value ERC1155 transfers that manipulated the beforeLdaTransfer reward accounting hook through a logic flaw in the pro-rata royalty accounting function.
Details
- Date
- Jun 23, 2026
- Kind
- Hack or exploit
- Method
- Incorrect Share Accounting
- How in
- Smart contract bug
- Target
- NFTfi
- Chains
- Polygon
Reported by
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Cite this page
SwanBluechip, "Royal.io hack, Jun 23, 2026: $263K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht5505da90c4/ (data as of 2026-10-31).