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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two six-year-old security flaws impacting Sitecore CMS and Experience Platform (XP) to its Known Exploited Vulnerabilities ( KEV ) catalog, based on evidence of active exploitation. The vulnerabilities are listed below - CVE-2019-9874 (CVSS score: 9.8) - A deserialization vulnerability in the Sitecore.Security.AntiCSRF module that allows an unauthenticated attacker to execute arbitrary code by sending a serialized .NET object in the HTTP POST parameter __CSRFTOKEN CVE-2019-9875 (CVSS score: 8.8) - A deserialization vulnerability in the Sitecore.Security.AntiCSRF module that allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in the HTTP POST parameter __CSRFTOKEN There are currently no details on how the flaws are being weaponized in the wild and by whom, although SiteCore, in an update shared on March 30, 2020, said it became "aware of active exploit...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday formally added a critical security flaw impacting React Server Components (RSC) to its Known Exploited Vulnerabilities ( KEV ) catalog following reports of active exploitation in the wild. The vulnerability, CVE-2025-55182 (CVSS score: 10.0), relates to a case of remote code execution that could be triggered by an unauthenticated attacker without requiring any special setup. It's also tracked as React2Shell. "Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints," CISA said in an advisory. The problem stems from insecure deserialization in the library's Flight protocol, which React uses to communicate between a server and client. As a result, it leads to a scenario where an unauthenticated, remote attacker can execute arbi...

In a rapidly evolving digital landscape, it's crucial to reevaluate how we secure web environments. Traditional antivirus-approach solutions have their merits, but they're reactive. A new report delves into the reasons for embracing proactive web security solutions, ensuring you stay ahead of emerging threats.  To learn more, download the full report  here . The New Paradigm If you’ve been relying on the old-style antivirus-based approach to website security up to now, then we could summarize why you need to update to the more proactive approach simply by saying — prevention is always preferable to cure. That’s the overarching rationale for adopting a proactive web security solution, but let’s break it down into a few more detailed reasons for updating to the newer and more effective proactive approach.  To be clear, we’re not denying that an antivirus-approach solution is ideal for detecting and responding to threats, but there's no escaping the fact that it’s limit...

Data loss and theft continues to rise, and hardly a day goes by without significant data breaches hit the headlines. In January 2019 alone, 1.76 billion records were leaked, and according to IBM's Data Breach study, the average cost of each lost or stolen record has reached about $148. Most of these data leaks are because of malicious attacks, where exploitation of web application vulnerabilities is one of the most common cyber attack vectors. An application security breach is a problem facing one and all, and no matter what's the size of your company, your web applications are prone to cyber attacks. Hackers breach sites for a variety of reasons—some do it for fame, some to get competitive information, whereas some do it just for financial gains. No matter what the reason is, the cost of a security breach is always higher than the cost of protection, leading to loss of data, substantial financial losses, and most importantly, loss of customers' trust. If you a...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has urged federal agencies to patch the recent React2Shell vulnerability by December 12, 2025, amid reports of widespread exploitation. The critical vulnerability, tracked as CVE-2025-55182 (CVSS score: 10.0), affects the React Server Components (RSC) Flight protocol. The underlying cause of the issue is an unsafe deserialization that allows an attacker to inject malicious logic that the server executes in a privileged context. It also affects other frameworks, including Next.js, Waku, Vite, React Router, and RedwoodSDK. "A single, specially crafted HTTP request is sufficient; there is no authentication requirement, user interaction, or elevated permissions involved," Cloudforce One, Cloudflare's threat intelligence team, said . "Once successful, the attacker can execute arbitrary, privileged JavaScript on the affected server." Since its public disclosure on December 3, 2025, the shortcoming...

Cybersecurity researchers have disclosed details of a persistent nine-month-long campaign that has targeted Internet of Things (IoT) devices and web applications to enroll them into a botnet known as RondoDox. As of December 2025, the activity has been observed leveraging the recently disclosed React2Shell (CVE-2025-55182, CVSS score: 10.0) flaw as an initial access vector, CloudSEK said in an analysis. React2Shell is the name assigned to a critical security vulnerability in React Server Components (RSC) and Next.js that could allow unauthenticated attackers to achieve remote code execution on susceptible devices. According to statistics from the Shadowserver Foundation, there are about 90,300 instances that remain susceptible to the vulnerability as of December 31, 2025, out of which 68,400 instances are located in the U.S., followed by Germany (4,300), France (2,800), and India (1,500). RondoDox, which emerged in early 2025, has broadened its scale by adding new N-day secur...

Another week in cybersecurity. Another week of "you've got to be kidding me." Attackers were busy. Defenders were busy. And somewhere in the middle, a whole lot of people had a very bad Monday morning. That's kind of just how it goes now. The good news? There were some actual wins this week. Real ones. The kind where the good guys showed up, did the work, and made a dent. It doesn't always happen, so when it does, it's worth noting. The bad news? For every win, there's a fresh headache waiting right behind it. New tricks, old tricks dressed up in new clothes, and a few things that'll make you want to go touch grass and never log back in. But you will. We all do. So here's everything that mattered this week — the wins, the warnings, and the stuff you really shouldn't ignore. ⚡ Threat of the Week Tycoon 2FA and LeakBase Operations Dismantled — The infrastructure hosting the Tycoon2FA service, which Europol said was among the largest advers...

This week was a total digital dumpster fire! Hackers were like, "Let's cause some chaos!" and went after everything from our browsers to those fancy cameras that zoom and spin. (You know, the ones they use in spy movies? 🕵️‍♀️) We're talking password-stealing bots, sneaky extensions that spy on you, and even cloud-hacking ninjas! 🥷 It's enough to make you want to chuck your phone in the ocean. (But don't do that, you need it to read this newsletter!) The good news? We've got the inside scoop on all the latest drama. Think of this newsletter as your cheat sheet for surviving the digital apocalypse. We'll break down the biggest threats and give you the knowledge to outsmart those pesky hackers. Let's go! ⚡ Threat of the Week North Korean Hackers Deploy Play Ransomware: In what's a sign of blurring boundaries between nation-state groups and cybercrime actors, it has emerged that the North Korean state-sponsored hacking crew called Andariel ...

Skyrocketing data breaches bring incalculable losses to organizations and can cost cybersecurity executives their jobs. Here we examine the top five places in 2019 where cybercriminals are stealing corporate and government data without ever getting noticed and then learn how to avoid falling victim to unscrupulous attackers. 1. Misconfigured Cloud Storage 48% of all corporate data is stored in the cloud compared to 35% three years ago, according to a 2019 Global Cloud Security Study by cybersecurity company Thales that surveyed over 3,000 professionals across the globe. Contrastingly, only 32% of the organizations believe that protecting data in the cloud is their own responsibility, counting on cloud and IaaS providers to safeguard the data. Worse, 51% of the organizations do not use encryption or tokenization in the cloud. (ISC)² Cloud Security Report 2019 assets that 64% of cybersecurity professionals perceive data loss and leakage as the biggest risk associated with the...