{"id":10663,"date":"2026-02-14T10:03:49","date_gmt":"2026-02-14T10:03:49","guid":{"rendered":"https:\/\/serisec.com\/index.php\/2026\/02\/14\/threat-actor-allegedly-selling-critical-severity-opensea-0-day-exploit-chain-on-hacking-forums\/"},"modified":"2026-02-14T10:03:49","modified_gmt":"2026-02-14T10:03:49","slug":"threat-actor-allegedly-selling-critical-severity-opensea-0-day-exploit-chain-on-hacking-forums","status":"publish","type":"post","link":"https:\/\/serisec.com\/index.php\/2026\/02\/14\/threat-actor-allegedly-selling-critical-severity-opensea-0-day-exploit-chain-on-hacking-forums\/","title":{"rendered":"Threat Actor Allegedly Selling Critical Severity OpenSea 0-day Exploit Chain on Hacking Forums"},"content":{"rendered":"

Threat Actor Allegedly Selling Critical Severity OpenSea 0-day Exploit Chain on Hacking Forums
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A threat actor is reportedly selling a purported critical severity zero-day exploit chain targeting OpenSea for $100,000 USD in Bitcoin or Monero. The listing claims the vulnerability remains unpatched and undisclosed, raising alarms in the NFT community.<\/p>\n

The exploit allegedly targets flaws in OpenSea\u2019s Seaport protocol<\/a> order validation logic across Ethereum Mainnet, Polygon, and Blast networks.<\/p>\n

It enables attackers to force-transfer high-value NFTs for zero ETH, bypassing listing approvals and functioning on both active and inactive listings through signature malleability and cross-collection attacks.<\/p>\n

The seller provides proof-of-concept code and a live demo upon payment, positioning it as a complete chain capable of instant asset drainage without user interaction.<\/p>\n

Dark Web Informer first spotted the listing on underground hacking forums, where the actor markets it as a fresh zero-day with no prior public exploits observed.<\/p>\n

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\"\u203c\"\"\ud83c\uddfa\ud83c\uddf8\" A threat actor is selling an alleged critical severity OpenSea 0-day exploit chain for $100,000 USD (BTC\/XMR).<\/p>\n

The threat actor claims the exploit affects OpenSea’s Seaport order validation logic on Ethereum Main Net, Polygon, and Blast, enabling forced transfer of\u2026 pic.twitter.com\/brwjok9Qq8<\/a><\/p>\n

\u2014 Dark Web Informer (@DarkWebInformer) February 12, 2026<\/a>\n<\/p><\/blockquote>\n