Cloudflare outage: what happened to Cloudflare today again?

A new Cloudflare outage on December 5 caused widespread disruption worldwide, affecting major platforms including Zerodha, Groww, Angel One, HSBC and Deliveroo. The interruption triggered “500 Internal Service Error” messages for users as services slowed or became inaccessible.

Cloudflare’s CTO confirmed the outage stemmed from an internal malfunction linked to emergency mitigation steps related to a recent React security issue. The company has since implemented a fix and restored services.

What today’s Cloudflare outage revealed about the network failure

Cloudflare acknowledged the problem shortly after users began reporting failures across trading apps, banking platforms and delivery services. According to the company, the issue was not an attack but resulted from disabling certain logging functions while addressing a React CVE earlier in the week.

Dane Knecht, Cloudflare’s CTO, said the disruption was a result of internal changes meant to support security mitigation. He noted that services were returning online and that a full technical explanation would be shared. CNBC reported that Cloudflare rolled out a fix and noted that scheduled maintenance was already underway in Bogota and Warsaw.

Several major Indian trading platforms, including Zerodha and Groww, saw temporary downtime during peak hours. International companies like HSBC and Deliveroo also experienced accessibility issues. Social media users across multiple regions reported site failures and difficulty accessing secure pages.

The outage follows a similar global malfunction on November 18, when major platforms such as X, ChatGPT, Grindr, Canva and Zoom were affected. BBC News reported at the time that a misfired configuration file had caused Cloudflare’s network to crash. Cloudflare later apologized, calling any outage “unacceptable” due to its critical role in powering global internet infrastructure.

How repeated outages affect global platforms depending on Cloudflare

Cloudflare provides infrastructure support for millions of websites and handles over 81 million HTTP requests per second. When disruptions occur, they rapidly affect financial services, government websites, e-commerce providers, streaming platforms and critical communication networks.

Today’s outage again highlighted the dependency many digital platforms have on Cloudflare’s distributed network. Trading platforms faced delays during active market sessions, raising concerns among investors and users. Banking and food-delivery services noted temporary login failures, creating confusion during high traffic periods.

Repeated outages may push companies to reassess redundancies and backup routing strategies. Cloudflare remains one of the largest global content delivery and security providers, but incidents like these put pressure on the company to strengthen internal safeguards and ensure minimal downtime.

Cloudflare says services are now restored, but a detailed technical report is expected later today. The company emphasized that the outage was internal and unrelated to any cyberattack.

FYI (keeping you in the loop)-

Q1: What caused the Cloudflare outage today?

The outage was triggered by internal logging changes made during mitigation of a recent React CVE. Cloudflare confirmed it was not an attack.

Q2: Which platforms were affected by the Cloudflare outage?

Zerodha, Groww, Angel One, HSBC and Deliveroo were among the affected services. Many users saw “500 Internal Service Error” messages.

Q3: Has Cloudflare faced outages before?

Yes. A major outage occurred on November 18, 2025, disrupting platforms like X, ChatGPT, Canva and Zoom.

Q4: How does Cloudflare impact global internet services?

Cloudflare manages security and content delivery for millions of websites. Any malfunction affects access to financial, commercial and communication platforms.

Q5: Is Cloudflare back online now?

Cloudflare said a fix has been deployed and services should be functioning normally. A detailed technical explanation will follow.