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Category — cPanel
cPanel CVE-2026-41940 Under Active Exploitation to Deploy Filemanager Backdoor

cPanel CVE-2026-41940 Under Active Exploitation to Deploy Filemanager Backdoor

May 11, 2026 Vulnerability / Ransomware
A threat actor named Mr_Rot13 has been attributed to the exploitation of a recently disclosed critical cPanel flaw to deploy a backdoor codenamed Filemanager on compromised environments. The attack exploits CVE-2026-41940 , a vulnerability impacting cPanel and WebHost Manager (WHM) that could result in an authentication bypass and allow remote attackers to gain elevated control of the control panel. According to a new report from QiAnXin XLab, the security defect has been exploited by a number of threat actors shortly after its public disclosure late last month, resulting in malicious behaviors like cryptocurrency mining, ransomware, botnet propagation, and backdoor implantation. "Monitoring data shows that more than 2,000 attacker source IPs worldwide are currently involved in automated attacks and cybercrime activities targeting this vulnerability," XLab researchers said. "These IPs are distributed across multiple regions globally, primarily originating from Germ...
cPanel, WHM Release Fixes for Three New Vulnerabilities — Patch Now

cPanel, WHM Release Fixes for Three New Vulnerabilities — Patch Now

May 09, 2026 Vulnerability / Web Hosting
cPanel has released updates to address three vulnerabilities in cPanel and Web Host Manager (WHM) that could be exploited to achieve privilege escalation, code execution, and denial-of-service. The list of vulnerabilities is as follows - CVE-2026-29201 (CVSS score: 4.3) - An insufficient input validation of the feature file name in the "feature::LOADFEATUREFILE" adminbin call that could result in an arbitrary file read. CVE-2026-29202 (CVSS score: 8.8) - An insufficient input validation of the "plugin" parameter in the "create_user API" call that could result in arbitrary Perl code execution on behalf of the already authenticated account's system user. CVE-2026-29203 (CVSS score: 8.8) - An unsafe symlink handling vulnerability that allows a user to modify access permissions of an arbitrary file using chmod, resulting in denial-of-service or possible privilege escalation. The shortcomings have been patched in the following versions - cPane...
Critical cPanel Authentication Vulnerability Identified — Update Your Server Immediately

Critical cPanel Authentication Vulnerability Identified — Update Your Server Immediately

Apr 29, 2026 Vulnerability / Web Hosting
cPanel has released security updates to address a security issue impacting various authentication paths that could allow an attacker to obtain access to the control panel software. The problem affects all currently supported versions of cPanel and WebHost Manager (WHM), according to an alert published by WebPros on Tuesday. It does not have an official identifier. The issue has been addressed in the following versions - 11.86.0.41 and higher 11.110.0.97 and higher 11.118.0.63 and higher 11.124.0.35 and higher 11.126.0.54 and higher 11.130.0.19 and higher 11.132.0.29 and higher 11.134.0.20 and higher 11.136.0.5 and higher "If your server is not running a supported version of cPanel that is eligible for this update, it is highly recommended that you work toward updating your server as soon as possible, as it may also be affected," cPanel noted. While cPanel did not share any details about the vulnerability, web hosting and domain registration company Namecheap d...
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Hackers Use ModernLoader to Infect Systems with Stealers and Cryptominers

Hackers Use ModernLoader to Infect Systems with Stealers and Cryptominers

Aug 30, 2022
As many as three disparate but related campaigns between March and Jun 2022 have been found to deliver a variety of malware, including ModernLoader, RedLine Stealer, and cryptocurrency miners onto compromised systems. "The actors use PowerShell, .NET assemblies, and HTA and VBS files to spread across a targeted network, eventually dropping other pieces of malware, such as the  SystemBC  trojan and  DCRat , to enable various stages of their operations," Cisco Talos researcher Vanja Svajcer said in a report shared with The Hacker News. The malicious implant in question, ModernLoader , is designed to provide attackers with remote control over the victim's machine, which enables the adversaries to deploy additional malware, steal sensitive information, or even ensnare the computer in a botnet. Cisco Talos attributed the infections to a previously undocumented but Russian-speaking threat actor, citing the use of off-the-shelf tools. Potential targets included Eastern Eur...
2-Factor Authentication Bypass Flaw Reported in cPanel and WHM Software

2-Factor Authentication Bypass Flaw Reported in cPanel and WHM Software

Nov 25, 2020
cPanel, a provider of popular administrative tools to manage web hosting, has patched a security vulnerability that could have allowed remote attackers with access to valid credentials to bypass two-factor authentication (2FA) protection on an account. The issue, tracked as "SEC-575" and discovered by researchers from  Digital Defense , has been remedied by the company in versions 11.92.0.2, 11.90.0.17, and 11.86.0.32 of the software. cPanel and WHM (Web Host Manager) offers a Linux-based control panel for users to handle website and server management, including tasks such as adding sub-domains and performing system and control panel maintenance. To date, over  70 million domains  have been launched on servers using cPanel's software suite. The issue stemmed from a lack of rate-limiting during 2FA during logins, thus making it possible for a malicious party to repeatedly submit 2FA codes using a brute-force approach and circumvent the authentication check. Digital D...
cPanel and WHM Multiple Cross Site Scripting Vulnerabilities

cPanel and WHM Multiple Cross Site Scripting Vulnerabilities

Dec 27, 2012
cPanel is a Unix based  fully featured popular web based hosting account control panel that helps webmasters to manage their domains through a web browser. The latest version of  cPanel & WHM is 11.34, which is  v ulnerable  to multiple cross site scripting. During my bug hunting process, today I ( Christy Philip Mathew )  discovered some serious XSS v ulnerabilities in  official cPanel, WHM. It also impact on the  latest version of software. This week, Rafay Baloch (Pakistani white hat hacker) also discovered another reflective cross site scripting vulnerability in  cPanel at manage.html . The interesting part would be the whole demonstration I done with the Official cPanel Demo located at http://cpanel.net/demo/ location, can be accessed via demo user & password provided by cPanel website itself i.e.  http://demo.cpanel.net:2086/login/?user=demo&pass=demo These  vulnerabilit...
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