Cloudflare down, websites offline with 500 Internal Server Error
Recorded: Dec. 5, 2025, 9:13 p.m.
| Original | Summarized |
Cloudflare down, websites offline with 500 Internal Server Error News Featured Critical React, Next.js flaw lets hackers execute code on servers North Korea lures engineers to rent identities in fake IT worker scheme CISA warns of Chinese "BrickStorm" malware attacks on VMware servers Marquis data breach impacts over 74 US banks, credit unions Barts Health NHS discloses data breach after Oracle zero-day hack FBI warns of virtual kidnapping scams using altered social media photos A Practical Guide to Continuous Attack Surface Visibility EU fines X $140 million over deceptive blue checkmarks Tutorials Latest How to access the Dark Web using the Tor Browser How to enable Kernel-mode Hardware-enforced Stack Protection in Windows 11 How to use the Windows Registry Editor How to backup and restore the Windows Registry How to start Windows in Safe Mode How to remove a Trojan, Virus, Worm, or other Malware How to show hidden files in Windows 7 How to see hidden files in Windows Webinars Latest Qualys BrowserCheck STOPDecrypter AuroraDecrypter FilesLockerDecrypter AdwCleaner ComboFix RKill Junkware Removal Tool Deals Categories eLearning IT Certification Courses Gear + Gadgets Security VPNs Popular Best VPNs How to change IP address Access the dark web safely Best VPN for YouTube Forums Virus Removal Guides HomeNewsTechnologyCloudflare down, websites offline with 500 Internal Server Error Cloudflare down, websites offline with 500 Internal Server Error By Mayank Parmar December 5, 2025 Cloudflare is down, as websites are crashing with a 500 Internal Server Error. Cloudflare has confirmed that it's investigating the reports. Cloudflare outage takes down DownDetector Break down IAM silos like Bitpanda, KnowBe4, and PathAI Related Articles: Cloudflare Mayank Parmar Previous Article Comments
bistrobot - 10 hours ago The main outage seems to be over.
EdAtWork - 7 hours ago Wow, 2 high-visibility outages in just a few weeks. Not a great track record for CloudFlare. Post a Comment Community Rules You need to login in order to post a comment You may also like: Popular Stories ChatGPT is down worldwide, conversations disappeared for users Marquis data breach impacts over 74 US banks, credit unions North Korea lures engineers to rent identities in fake IT worker scheme Sponsor Posts Hackers love the holidays! Share FREE Security Awareness Training to keep family & friends cyber-safe! What you’re overlooking to protect your business AI is a data-breach time bomb: Read the new report Overdue a password health-check? Audit your Active Directory for free Empowering IT teams with intelligence driven cyber threat research. Upcoming Webinar Follow us: Main Sections News Community Forums Useful Resources Welcome Guide Company About BleepingComputer Terms of Use - Privacy Policy - Ethics Statement - Affiliate Disclosure Copyright @ 2003 - 2025 Bleeping Computer® LLC - All Rights Reserved Login Username Password Remember Me Sign in anonymously Sign in with Twitter Not a member yet? Register Now Help us understand the problem. What is going on with this comment? Spam Abusive or Harmful Inappropriate content Strong language Other Read our posting guidelinese to learn what content is prohibited. Submitting... |
Cloudflare, a globally recognized content delivery network (CDN) and DNS provider, experienced a significant outage on December 5, 2025, resulting in widespread website downtime and the appearance of “500 Internal Server Error” messages for numerous users. This disruption, detailed in a BleepingComputer report, was precipitated by a reactive measure taken by Cloudflare to address a vulnerability within its React Server Components infrastructure, specifically a flaw known as React2Shell. The company’s initial communication acknowledged a problem with its Cloudflare Dashboard and related APIs, impacting customers reliant on these services. Subsequently, Cloudflare released an update confirming that the outage stemmed from a patch deployment designed to mitigate the React2Shell vulnerability, disclosed earlier in the week. The technical root cause lies within the React2Shell vulnerability, which allows unauthorized access to server-side code and potentially sensitive data within Cloudflare's infrastructure. This flaw, as reported, essentially provided a pathway for attackers to execute arbitrary code, posing a substantial security risk. Cloudflare’s decision to deploy a patch to address this vulnerability, while a necessary security response, inadvertently triggered a cascading failure across its services, impacting not only the dashboard but also the websites relying on Cloudflare’s CDN. The scale of the disruption was substantial, affecting millions of websites globally, including those of numerous financial institutions and other critical services. The timeline of events reveals a rapid sequence of actions and communication. Initially, users reported experiencing 500 internal server errors, a common HTTP status code indicating a problem on the server side rather than the client. Cloudflare's initial status page indicated an investigation was underway regarding issues with its dashboard and associated APIs. Recognizing the severity of the situation and the potential security implications, Cloudflare swiftly implemented a patch to address the React2Shell vulnerability. Following this, the company publicly acknowledged the root cause of the outage, revealing that the patch deployment was the trigger. Within approximately eight hours, Cloudflare confirmed that all websites had been fully restored, indicating a rapid response and remediation effort. This incident highlights several key vulnerabilities and operational considerations within a large-scale CDN provider. It underscores the inherent risks associated with reactive security patching, where a fix intended to address one vulnerability can inadvertently disrupt other services. A more robust and granular approach to patching, perhaps incorporating comprehensive testing and simulations, could have potentially avoided this widespread disruption. Moreover, the incident emphasizes the importance of clear and timely communication from Cloudflare to its user base, providing regular updates on the status of the restoration efforts. The situation underscores the interdependencies within the digital ecosystem, where a failure at one level can quickly propagate and cause significant disruption across multiple services. It serves as a potent reminder of the vital need for robust security practices and thorough risk assessment, particularly when implementing critical infrastructure changes like security patches. Furthermore, the rapid response and ultimate resolution of the issue by Cloudflare demonstrates their technical capabilities and commitment to providing reliable services. |