Critical Flaw in OpenSea Could Have Let Hackers Steal Cryptocurrency From Wallets

critical vulnerability in OpenSea

A now-patched critical vulnerability in OpenSea, the world’s largest non-fungible token (NFT) marketplace, could’ve been abused by malicious actors to drain cryptocurrency funds from a victim by sending a specially-crafted token, opening a new attack vector for exploitation.

The findings come from cybersecurity firm Check Point Research, which began an investigation into the platform following public reports of stolen cryptocurrency wallets triggered by free airdropped NFTs. The issues were fixed in less than one hour of responsible disclosure on September 26, 2021.

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“Left unpatched, the vulnerabilities could allow hackers to hijack user accounts and steal entire cryptocurrency wallets by crafting malicious NFTs,” Check Point researchers said.

As the name indicates, NFTs are unique digital assets such as photos, videos, audio, and other items that can be sold and traded on the blockchain, using the technology as a certificate of authenticity to establish a verified and public proof of ownership.

The modus operandi of the attack relies on sending victims a malicious NFT that, when clicked, results in a scenario whereby…

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