Resolved after 4 hours 29 minutes, affecting US-West and US-West and 1 more, on July 22, 2025.
### **Dates:** Tuesday July 22d 2025, 07:28 UTC - 15:07 UTC. ### **What happened:** The Sauce Labs dashboard for our US-West-1 datacenter was unavailable intermittently during the incident timeline. ### **Why it happened:** This issue was caused by Cache poisoning via a specific header. ### **How we fixed it:** The header settings were reviewed and fixed in our proxies. ### **What we are doing to prevent it from happening again:** We have added stricter rules to prevent further cache poisoning attempts.
Affected components
Update timeline
- investigating Jul 22, 2025, 08:50 AM UTC
We are currently seeing intermittent errors accessing the US-West-1 Sauce Labs dashboard. We are investigating.
- investigating Jul 22, 2025, 09:53 AM UTC
We are continuing to investigate this issue.
- monitoring Jul 22, 2025, 12:07 PM UTC
We have been seeing intermittent errors accessing the US-West-1 Sauce Labs dashboard. We have identified a solution and have deployed a fix for this issue. We are monitoring.
- resolved Jul 22, 2025, 01:19 PM UTC
After taking remedial action, the Sauce Labs dashboard is now stable and available. This incident is resolved.
- postmortem Aug 20, 2025, 10:02 AM UTC
### **Dates:** Tuesday July 22d 2025, 07:28 UTC - 15:07 UTC. ### **What happened:** The Sauce Labs dashboard for our US-West-1 datacenter was unavailable intermittently during the incident timeline. ### **Why it happened:** This issue was caused by Cache poisoning via a specific header. ### **How we fixed it:** The header settings were reviewed and fixed in our proxies. ### **What we are doing to prevent it from happening again:** We have added stricter rules to prevent further cache poisoning attempts.
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