- Level
- confirmed
- Worst impact
- Partial outage
- Components
- US-West, US-West, US-West, US-West, US-West
- Regions
- us, us-west-1
- Down Index
- 39of 100
What to do
Check whether you use Sauce Labs US-West, US-West, US-West, US-West and 1 more in us, us-west-1. Check your stack
Drop a package.json, lockfile, Terraform or a list of domains at down.guide to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 4h 29m it lasted.
Anything that failed between 2025-07-22 08:50 UTC and 2025-07-22 13:19 UTC may need a replay.Subscribe to Sauce Labs's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=saucelabs works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Root cause
Why it happened: This issue was caused by Cache poisoning via a specific header.Read the postmortem
Updates from Sauce Labs 5
- investigating
We are currently seeing intermittent errors accessing the US-West-1 Sauce Labs dashboard. We are investigating.
provider
- investigating
We are continuing to investigate this issue.
provider
- monitoring
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.
provider
- resolved
After taking remedial action, the Sauce Labs dashboard is now stable and available. This incident is resolved.
provider
- postmortem
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.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
Something wrong on this page? Report an error or send us a note. Every fix is listed here.
Questions about DWN-73735d1e64
Is Sauce Labs still down?
No, this incident was resolved 2025-07-22 13:19 UTC. For Sauce Labs's live state, see https://down.guide/providers/saucelabs.
How long did it last?
4h 29m, from 2025-07-22 08:50 UTC to 2025-07-22 13:19 UTC, by the times Sauce Labs posted.
What was affected?
Sauce Labs named US-West, US-West, US-West, US-West and 1 more in us, us-west-1.
What caused it?
Sauce Labs wrote: "Why it happened: This issue was caused by Cache poisoning via a specific header." The postmortem: https://stspg.io/c9bp7l1whr83
Where does this come from?
Sauce Labs's official status page, https://status.saucelabs.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.