PostHog Status

All Systems Operational

Uptime over the past 90 days. View historical uptime.

PostHog.com Operational

90 days ago

100.0 % uptime

Today

US Cloud 🇺🇸 Operational

90 days ago

99.83 % uptime

Today

App Operational

90 days ago

99.89 % uptime

Today

Event and Data Ingestion Success Operational

90 days ago

99.98 % uptime

Today

Event and Data Ingestion Lag Operational

90 days ago

99.39 % uptime

Today

Feature Flags and Experiments Operational

90 days ago

99.93 % uptime

Today

Session Replay Ingestion Operational

90 days ago

99.66 % uptime

Today

Destinations Operational

90 days ago

100.0 % uptime

Today

API /query Endpoint Operational

90 days ago

100.0 % uptime

Today

EU Cloud 🇪🇺 Operational

90 days ago

99.95 % uptime

Today

App Operational

90 days ago

99.98 % uptime

Today

Event and Data Ingestion Success Operational

90 days ago

100.0 % uptime

Today

Event and Data Ingestion Lag Operational

90 days ago

100.0 % uptime

Today

Feature Flags and Experiments Operational

90 days ago

99.96 % uptime

Today

Session Replay Ingestion Operational

90 days ago

99.71 % uptime

Today

Destinations Operational

90 days ago

100.0 % uptime

Today

API /query Endpoint Operational

90 days ago

100.0 % uptime

Today

Support APIs Operational

90 days ago

100.0 % uptime

Today

Update Service Operational

90 days ago

100.0 % uptime

Today

AWS US 🇺🇸 Operational

AWS ec2-us-east-1 Operational

AWS elb-us-east-1 Operational

AWS rds-us-east-1 Operational

AWS elasticache-us-east-1 Operational

AWS kafka-us-east-1 Operational

AWS EU 🇪🇺 Operational

AWS elb-eu-central-1 Operational

AWS elasticache-eu-central-1 Operational

AWS rds-eu-central-1 Operational

AWS ec2-eu-central-1 Operational

AWS kafka-eu-central-1 Operational

Operational

Degraded Performance

Partial Outage

Major Outage

Maintenance

System Metrics Month Week Day

US Ingestion End to End Time

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US Decide Endpoint Response Time

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US App Response Time

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US Event/Data Ingestion Response Time

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EU Ingestion End to End Time

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EU App Response Time

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EU Decide Endpoint Response Time

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EU Event/Data Ingestion Endpoint Response Time

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Past Incidents

Nov 30, 2025

No incidents reported today.

Nov 29, 2025

No incidents reported.

Nov 28, 2025

US: Elevated errors and latency with feature flags

Resolved - We're confident that the latest adjustment fixed the issue.

We will continue monitoring FF closely after resolution, but we don't see customer-facing impact anymore.

Thank you for the patience.
Nov 28, 12:32 UTC

Update - The service is stable as we are applying some optimizations.
Nov 28, 12:16 UTC

Monitoring - We've resolved the immediate issue with the throttling and the service is back to normal.

We are still investigating further what the root cause of the congestion.
Nov 28, 10:45 UTC

Identified - We identified the issue with our flags service being throttled on cpu allocations. The service has been scaled up and we have seen latency and error counts stablilise again.

We're investigating what could have led to this cpu exhaustion and will update soon.
Nov 28, 10:26 UTC

Update - We've spotted that something has gone wrong. We're currently investigating the issue, and will provide an update soon.
Nov 28, 10:02 UTC

Investigating - We're experiencing an elevated level of latency and errors on our feature flag endpoints and are currently looking into the issue.
Nov 28, 09:58 UTC

Nov 27, 2025

EU: Datawarehouse maintenance

Completed - The scheduled maintenance has been completed.
Nov 27, 23:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 27, 19:00 UTC

Scheduled - We will perform upgrades on our ClickHouse infrastructure in EU to increase performance and reliablity of our data platform.

We might accumulate lag in our data processing and elevated error rate to our query-endpoints during this time. This can have effect on the application and API responses for some customers. The queries can be retried and should succeed.
Nov 20, 13:02 UTC

Nov 26, 2025

Elevated PostHog AI errors

Resolved - We think the impact from the issue is over.
Nov 26, 21:13 UTC

Monitoring - A fix has been implemented and we are monitoring the results.
Nov 26, 20:48 UTC

Identified - One of our deployments was misconfigured, causing reading Persons or Groups to fail. We identified the issue and implemented the fix.
Nov 26, 20:10 UTC

Investigating - We're experiencing an elevated level of errors in the generation of insights with PostHog AI
Nov 26, 19:34 UTC

Sporadic Person Anomalies

Resolved - Maintenance on the Persons DB has completed and these anomalies should now be resolved.
Nov 26, 18:39 UTC

Identified - As we work to complete the transition to the new persons database, some product features will see sporadic persons anomalies. No data has been lost.
Nov 17, 18:51 UTC

Persons Database Maintenance

Completed - The scheduled maintenance has been completed.
Nov 26, 18:30 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 26, 16:30 UTC

Scheduled - We're performing a critical infrastructure upgrade to our persons database system. This whole process will take approximately 2 hours.
We expect that some customers may experience delays in event processing for a brief period of time. Your data is safe and will not be lost during this maintenance. We apologize for any inconvenience and appreciate your patience.
Nov 26, 16:19 UTC

Persons Database Maintenance

Completed - The scheduled maintenance has been completed.
Nov 26, 06:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 26, 04:00 UTC

Nov 25, 2025

PostHog NPM packages compromised

Resolved - With all malicious package versions unpublished, we're now actively hardening our npmjs deployment pipeline, our GitHub Actions workflows, and all Node projects to prevent a future incident. A public postmortem will follow with more detailed information, next steps, and learnings.
Nov 25, 02:40 UTC

Update - It looks like we were victim of the following attack that's hit over 300 packages: https://helixguard.ai/blog/malicious-sha1hulud-2025-11-24.

Just to make sure, you want to delete node_modules and run `pnpm cache delete` if using pnpm to make sure you don't have any affected packages running.

We've unpublished all relevant versions, and have published newer versions for all JS SDKs. Make sure you're on the latest version of our JS SDKs.

The following packages were compromised:
- posthog-node 4.18.1, 5.13.3 and 5.11.3
- posthog-js 1.297.3
- posthog-react-native 4.11.1
- posthog-docusaurus 2.0.6
- posthog-react-native-session-replay@1.2.2
- @posthog/agent@1.24.1
- @posthog/ai@7.1.2
- @posthog/cli@0.5.15
- @PostHog/wizard@1.18.1

The following versions are safe to install:

- posthog-js@1.298.0
- posthog-node@5.14.0
- posthog-plugin-hello-world@1.0.0
- posthog-react-native@4.13.0
- posthog-react-native-session-replay@1.2.3
- @posthog/agent@1.24.2
- @posthog/ai@7.2.0
- @posthog/cli@0.5.16
- @PostHog/wizard@1.18.2
Nov 24, 16:32 UTC

Monitoring - It looks like we were victim of the following attack that's hit over 300 packages: https://helixguard.ai/blog/malicious-sha1hulud-2025-11-24

We've unpublished all relevant versions, and have published newer versions for all JS SDKs. Make sure you're on the latest version of our JS SDKs.

The following packages were compromised:
- posthog-node 4.18.1, 5.13.3 and 5.11.3
- posthog-js 1.297.3
- posthog-react-native 4.11.1
- posthog-docusaurus 2.0.6
Nov 24, 10:28 UTC

Update - We've identified that several of our packages contain compromised versions. We've unpublished the affected versions for our main repo, and are published new, safe versions of the packages.
Nov 24, 09:42 UTC

Update - We've identified that some client library packages published this morning contain compromised packages. We're working to patch and republish clean packages.
Nov 24, 09:39 UTC

Investigating - We've identified that a version of our Javascript packages contains compromised packages. We're working to patch and republish clean packages.
Nov 24, 09:36 UTC

Nov 24, 2025

Nov 23, 2025

No incidents reported.

Nov 22, 2025

No incidents reported.

Nov 21, 2025

No incidents reported.

Nov 20, 2025

PostHog AI Elevated API Errors

Resolved - We have identified and resolved the issue.
Nov 20, 19:07 UTC

Identified - We're experiencing an elevated level of API errors and are currently looking into the issue.
Nov 20, 18:18 UTC

PostHog AI Elevated Errors

Resolved - We've spotted that something has gone wrong. We're currently investigating the issue, and will provide an update soon.
Nov 20, 11:14 UTC

Identified - We're experiencing an elevated level of API errors from Anthropic APIs due to an incident on their side.
Nov 20, 09:19 UTC

Nov 19, 2025

Cloudflare Outage

Resolved - Following the resolution of Cloudflare's incident (https://www.cloudflarestatus.com/incidents/8gmgl950y3h7), we're resolving as well.

Our mitigation efforts lead to an earlier normalisation of traffic numbers and error rates to normal levels.
Nov 19, 07:23 UTC

Monitoring - CloudFlare is experiencing issues globally, see https://www.cloudflarestatus.com/

We use CloudFlare to serve array.js and this was failing to load for some end users, causing events to not be sent by these users.

We have disabled CloudFlare proxying and are now seeing event traffic return to normal levels and don't expect any further impact from the CloudFlare outage
Nov 18, 12:40 UTC

Nov 18, 2025

Nov 17, 2025

Persons Database

Completed - The scheduled maintenance has been completed.
Nov 17, 19:00 UTC

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 17, 18:00 UTC

Scheduled - We're performing a critical infrastructure upgrade to our persons database system as a direct followup to the recent incident. This whole process will take approximately 1 hour.
We don't expect user observable service interruptions during this operation. Your data is safe and no data will be lost during this maintenance. We apologize for any inconvenience and appreciate your patience.
Nov 17, 17:36 UTC

PostHog AI is down due to the third-party limit

Resolved - We've spotted that something has gone wrong. We're currently investigating the issue, and will provide an update soon.
Nov 17, 16:35 UTC

Monitoring - API keys were rotated. PostHog AI services are recovering.
Nov 17, 15:15 UTC

Identified - We're experiencing an elevated level of API errors from Anthropic and are currently looking into the issue.
Nov 17, 14:46 UTC

Nov 16, 2025

No incidents reported.

All Systems Operational

Related

Past Incidents