Outage in Modal Labs
Some sandbox functionality is degraded when using CIDR allowlists
Resolved MinorIncident Report
Summary AI Generated
Modal Labs experienced degraded sandbox functionality for 48 minutes due to overly aggressive CIDR allowlist enforcement from a code change. The issue blocked egress traffic needed for tunnels, exec API, filesystem API, and connection tokens. A fix was merged and rolled out to restore normal sandbox operations.
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.
Components affected
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