Outage in Jenzabar
Cloudflare Outage, December 5th
Resolved MinorIncident Report
On December 5th, a portion of Cloudflare routed traffic experience an outage of approximately 25 minutes, from 08:47 UTC to 09:12 UTC. During this time, customer public-facing websites could have experience an outage that would have resulted in HTTP 500 errors being served to clients. This did directly impact some of Jenzabar's hosted clients.
The issue was not caused, directly or indirectly, by a cyber attack on Cloudflare’s systems or malicious activity of any kind to customer systems. Rather, it was triggered by Cloudflare internal changes attempting to detect and mitigate an industry-wide vulnerability disclosed late last week regarding React Server Components. This outage was not caused by any Jenzabar related changes.
You can read more about the Cloudflare outage here:
https://blog.cloudflare.com/5-december-2025-outage/
You can read more about the React Server Components here:
https://blog.cloudflare.com/waf-rules-react-vulnerability/
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RESOLVED
2 months ago - at 12/09/2025 12:41PM
On December 5th, a portion of Cloudflare routed traffic experience an outage of approximately 25 minutes, from 08:47 UTC to 09:12 UTC. During this time, customer public-facing websites could have experience an outage that would have resulted in HTTP 500 errors being served to clients. This did directly impact some of Jenzabar's hosted clients.
The issue was not caused, directly or indirectly, by a cyber attack on Cloudflare’s systems or malicious activity of any kind to customer systems. Rather, it was triggered by Cloudflare internal changes attempting to detect and mitigate an industry-wide vulnerability disclosed late last week regarding React Server Components. This outage was not caused by any Jenzabar related changes.
You can read more about the Cloudflare outage here:
https://blog.cloudflare.com/5-december-2025-outage/
You can read more about the React Server Components here:
https://blog.cloudflare.com/waf-rules-react-vulnerability/
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