Modal experienced a minor incident on April 28, 2026 affecting Sandbox execution (Sandboxes), lasting 23h 2m. The incident has been resolved; the full update timeline is below.
Affected components
Sandbox execution (Sandboxes)
Update timeline
- investigating Apr 28, 2026, 09:30 PM UTC
Due to a code change, CIDR allowlists were applied too aggressively, and egress used for some sandbox functionality (including tunnels, exec API, filesystem API, and connection tokens) was unintentionally blocked. A fix has been merged and is being rolled out.
- investigating Apr 28, 2026, 09:30 PM UTC
Due to a code change, CIDR allowlists were applied too aggressively, and egress used for some sandbox functionality (including tunnels, exec API, filesystem API, and connection tokens) was unintentionally blocked. A fix has been merged and is being rolled out.
- resolved Apr 29, 2026, 08:32 PM UTC
The issue has been resolved