What it does
open-appsec is an open-source web application and API security tool with learning-based request inspection and deployment-integration options.
open-appsec combines learning-based request inspection with API discovery, OpenAPI validation and rate limits. Rate-limit inputs can use an IP address or keys in JWTs, cookies or headers. Its File Security documentation describes an optional engine that analyzes HTTP uploads and consults Check Point ThreatCloud for reputation. That engine is inactive by default and is scoped to Check PointWAF or the deprecated open-appsec Premium subscription. Its settings distinguish Detect, Prevent and Disable and define handling for file size, nested archives and extraction failures. Confirm the cloud disclosure terms before enabling it for confidential uploads.
Strengths
- Learning-based web inspection and API-policy options
Best for
- Teams evaluating WAF controls around documented APIs
Sources
- open-appsec | Automatic Open Source WAF & API Security (Oct 26, 2026)
- open-appsec LICENSE (Oct 26, 2026)
- open-appsec File Security (Oct 26, 2026)