Cornerstone experienced a notice incident on August 4, 2025 affecting Uptime and Response Time, lasting 2h 43m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Aug 04, 2025, 02:20 PM UTC
Some customers on US SL2 may experience intermittent timeouts. We are treating this as a top priority, and will provide regular updates as we learn more.
- monitoring Aug 04, 2025, 02:49 PM UTC
The issue has stabilized and we are not seeing any timeouts. We are actively monitoring activity to ensure full resolution.
- investigating Aug 04, 2025, 03:07 PM UTC
We are observing small blips in timeouts. We are actively investigating the issue to determine the solution. We will continue to share updates as we learn more.
- resolved Aug 04, 2025, 05:04 PM UTC
The issue has been resolved, and we have observed sustained stability.
- postmortem Aug 22, 2025, 04:52 PM UTC
**Incident Summary:** On August 4, 2025, customers hosted in the US PRD SL2 environment experienced a service disruption caused by a faulty web page component. The issue introduced instability in the application and temporarily impacted service availability. **Root Cause:** The investigation determined that a web page component contained an excessive number of deeply nested HTML tags. This caused performance degradation and stability issues within the application, resulting in the disruption until the root cause was identified and remediated. **Corrective Action:** To restore stability and resume normal operations, Cornerstone took the following actions: * Immediately disabled the problematic page component to stabilize the environment. * Deployed a hotfix to correct the compatibility issue and restore full service functionality. **Preventive Measures:** To reduce the risk of recurrence, Cornerstone is implementing the following improvements: * Establishing a review process for custom components to ensure compliance with performance and coding best practices, including avoiding unnecessary or excessive HTML nesting. * Enhancing automated testing and dependency validation to detect similar issues earlier in the release cycle.