An anonymous reader quotes a report from TechCrunch: A severe security vulnerability affecting almost every version of the Linux operating system has caught defenders off-guard and scrambling to patch after security researchers publicly released exploit code that allows attackers to take complete control of vulnerable systems. The U.S. government says the bug, dubbed "CopyFail," is now being exploited in the wild, meaning it's being actively used in malicious hacking campaigns. [...] Given the risk to the federal enterprise network, U.S. cybersecurity agency CISA has ordered all civilian federal agencies to patch any affected systems by May 15.

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Hackers are actively exploiting a critical cPanel and WHM vulnerability, tracked as CVE-2026-41940, that allows remote attackers to bypass the login screen and gain full administrative access to affected web servers. Major hosts including Namecheap, HostGator, and KnownHost have taken mitigation steps or patched systems, but cPanel is urging all customers and web hosts to update immediately because the software is widely used across millions of websites. TechCrunch reports: cPanel and WHM are two software suites used for managing web servers that host websites, manage emails, and handle important configurations and databases needed to maintain an internet domain. The two suites have deep-access to the servers that they manage, allowing a malicious hacker potentially unrestricted access to data managed by the affected software. Given the ubiquity of the cPanel and WHM software across the web hosting industry, hackers could compromise potentially large numbers of websites that haven't patched the bug. Canada's national cybersecurity agency said in an advisory that the bug could be exploited to compromise websites on shared hosting servers, such as large web hosting companies. The agency said that "exploitation is highly probable" and that immediate action from cPanel customers, or their web hosts, is necessary to prevent malicious access. [...] One web hosting company says it found evidence that hackers have been abusing the vulnerability for months before the attempts were discovered.

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