Hack history / 2026 / Hack or exploit

Nesa

Hack or exploit on Aug 24, 2026 · Arithmetic Error

IN REVIEWSOURCES AGREE ON DATE AND LOSS · 2 SOURCES

Lost

$50M

face value; money taken near $60K (rekt.news)

Returned

none listed

as the sources state it

Rank

not ranked

a face value is not ranked

What happened

Nesa was exploited through a Cosmos EVM vulnerability involving inconsistent balance accounting between Cosmos EVM and the Cosmos SDK. In the shared exploit mechanism documented by Cosmos Labs, delegation of locked tokens from a vesting account through the staking precompile could cause an unchecked EVM balance underflow to approximately 2^256. The resulting artificial balance could then be used to overflow a high-balance victim account, reducing the victim balance to zero while transferring its legitimate tokens to the attacker, with no net increase in token supply. Nesa has confirmed exploitation of a Cosmos EVM vulnerability but has not publicly disclosed its Nesa-side exploit transaction or victim account, so application of the exact shared mechanism to Nesa remains strongly supported but not independently demonstrated at transaction level

The listed loss counts created tokens at market price; rekt.news puts the money actually taken near $60K.

In review: listed loss may be a face value: rekt.news puts the money taken near $60K.

Details

Date: Aug 24, 2026
Kind: Hack or exploit
Method: Arithmetic Error
How in: Smart contract bug
Target: Chain
Chains: Nesa

Reported by

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Cite this page

SwanBluechip, "Nesa hack, Aug 24, 2026: $50M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht055a6fcbe3/ (data as of 2026-11-01).

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