OSv

OSV, short for Open Source Vulnerability database, is a centralized, machine-readable repository of security vulnerabilities affecting open-source software. It aims to provide a single, consistent source of vulnerability data that can be consumed by automated tooling across different ecosystems, enabling faster and more reliable identification and remediation of insecure dependencies.

The project is hosted at osv.dev and was initiated to improve the accuracy, completeness, and interoperability of open-source vulnerability information. It is maintained by Google in collaboration with the broader software security community. OSV publishes vulnerability records in a public API and data format designed to be ecosystem-agnostic, facilitating integration with various package managers, security scanners, and CI/CD pipelines.

A typical OSV record includes fields such as an identifier, publication and modification timestamps, and references to related advisories. Each record contains an applies-to section that lists affected packages by ecosystem (for example npm, Maven, PyPI, RubyGems, Go modules) and specifies vulnerable version ranges using defined event-based ranges. Records also include a concise summary, detailed description, and severity information, often informed by CVSS scores. The database provides stable IDs and cross-links to related advisories and external references, enabling traceability across solutions and dashboards.

OSV is widely used to augment vulnerability detection and remediation across ecosystems, offering a unified schema that supports programmatic querying by package, ecosystem, version, or OSV identifier. While extensive, its coverage depends on ongoing contributions from the community and participating vendors.