A newly discovered loophole in one of the web’s mostused development tools is giving hackers a new way to drain cryptocurrencywallets. Cybersecurity researchers have reported a surge inmalicious code uploaded to legitimate websites through a vulnerability in thepopular JavaScript library React — a tool used by countless crypto platformsfor their front-end systems.Crypto Drainer Attacks Surge via React FlawAccording to Security Alliance (SEAL), a nonprofitcybersecurity organization, criminals are actively exploiting a recentlydisclosed React vulnerability labeled CVE-2025-55182.Crypto Drainers using React CVE-2025-55182We are observing a big uptick in drainers uploaded to legitimate (crypto) websites through exploitation of the recent React CVE.All websites should review front-end code for any suspicious assets NOW.— Security Alliance (@_SEAL_Org) December 13, 2025“We are observing a big uptick in drainers uploaded tolegitimate crypto websites through exploitation of the recent React CVE,” SEALstated on X (formerly Twitter). “All websites should review front-end code forany suspicious assets NOW.The flaw enables unauthenticated remote codeexecution, allowing attackers to secretly inject wallet-draining scripts intowebsites. The malicious code tricks users into approving fake transactions viadeceptive pop-ups or reward prompts.Read more: Hackers Exploit JavaScript Accounts in Massive Crypto Attack Reportedly Affecting 1B+ DownloadsSEAL cautioned that some compromised sites may beunexpectedly flagged as phishing risks. The organization advised webadministrators to conduct immediate security audits to catch any injectedassets or obfuscated JavaScript."If your project is getting blocked, that may be the reason. Please review your code first before requesting phishing page warning removal.The attack is targeting not only Web3 protocols! All websites are at risk. Users should exercise caution when signing ANY permit signature."Scan host for CVE-2025-55182Check if your FE code is suddenly loading assets from hosts you do not recognizeCheck if any of the "Scripts" loaded by your FE code are obfuscated JavaScriptInspect if the wallet is showing the correct recipient on the signature signing request— Security Alliance (@_SEAL_Org) December 13, 2025Phishing Flags and Hidden DrainersThe group warned that developers who find theirprojects mistakenly blocked as phishing pages should inspect their code firstbefore appealing the warning.In September, a major software supply-chain attack infiltrated JavaScript packages, raising the risk that cryptocurrency users could beexposed to theft. The incident involved the compromise of a reputabledeveloper’s account on the Node Package Manager platform, allowing attackers todistribute malicious code through packages that have been downloaded more thanone billion times.🚨 There’s a large-scale supply chain attack in progress: the NPM account of a reputable developer has been compromised. The affected packages have already been downloaded over 1 billion times, meaning the entire JavaScript ecosystem may be at risk.The malicious payload works…— Charles Guillemet (@P3b7_) September 8, 2025“There’s a large-scale supply chain attack inprogress: the NPM account of a reputable developer has been compromised,”Guillemet explained. “The affected packages have already been downloaded over 1billion times, meaning the entire JavaScript ecosystem may be at risk.”This article was written by Jared Kirui at www.financemagnates.com.