What Dependency Scanning Is
Dependency scanning, often called software composition analysis, inventories the third party libraries your project uses and checks them against databases of known vulnerabilities. Because most applications are mostly someone else's code, this catches a large share of real risk cheaply.
How It Works
- The scanner reads your lockfile to enumerate exact direct and transitive dependencies.
- It matches each version against advisory databases of known vulnerabilities.
- It reports findings with severity and, where available, a fixed version to upgrade to.
Using It Well
- Run scans in continuous integration so new pull requests are checked automatically.
- Fail the build on high severity findings to stop them from merging.
- Prioritize by exploitability and reachability, not raw count, to avoid alert fatigue.
- Keep dependencies up to date so patches arrive before vulnerabilities are weaponized.
Key idea
Automate composition analysis in your pipeline so known vulnerable dependencies are caught and fixed before they reach production.