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Node.js CORS middleware for Express and Connect that sets CORS response headers to indicate which browser origins can read responses. It’s useful for enabling or customizing cross-origin access in web APIs, including configuring static, dynamic, and per-request CORS options.
Project status
- Maintenance status: The source (expressjs/cors) appears actively maintained in 2026, with an upstream push on 2026-06-02 and an update tagged v2.8.6 on 2026-01-22.
- Update cadence (apparent): At least one notable update is evident in 2026 (v2.8.6 in January), followed by an upstream activity update in early June, suggesting a continuing but not necessarily rapid cadence.
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Recent updates
v2.8.6
v2.8.6 is primarily a documentation and maintenance release, with multiple CI and GitHub Actions dependency updates. It also includes small functional fixes related to how CORS options are documented/used (notably the origin function callback signature) and a bug fix for a function call with an extra parameter.