[VW-0] allow null for nullable fields on vulnerability input

[0xcad]

Currently the schema doesn't accept null, even if these fields are nullable, they can only be undefined.

Doing this specifically on vulnerability inputs for now, to support the Helm integration, but it should be repeated elsewhere (VW-213)

Summary by CodeRabbit

• Refactor
  • Updated validation for vulnerability data fields to allow explicit null values in addition to omission. This affects how certain fields (CVE ID, description, narrative, impact, CVSS score, CVSS vector, exploit URI, upstream API, and device artifact ID) are processed during submission.

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2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
viper	Ignored		Mar 20, 2026 1:48pm
viper-demo	Ignored		Mar 20, 2026 1:48pm

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 933f2b6c-2678-49a2-9dcb-07bf427aba09

📥 Commits

Reviewing files that changed from the base of the PR and between 38f0ae8 and 36ff4dd.

📒 Files selected for processing (1)

• src/features/vulnerabilities/types.ts

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📝 Walkthrough

Walkthrough

Nine fields in vulnerabilityInputSchema were updated to use nullish() instead of optional(), allowing fields to be omitted or explicitly set to null rather than only being omit-able. Field validation constraints remain unchanged when non-null values are provided.

Changes

Cohort / File(s)	Summary
Vulnerability Schema Updates src/features/vulnerabilities/types.ts	Changed 9 schema fields (cveId, description, narrative, impact, cvssScore, cvssVector, exploitUri, upstreamApi, deviceArtifactId) from optional() to nullish(), enabling explicit null values alongside omission in validation.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: converting optional fields to nullish fields to allow explicit null values in the vulnerability input schema.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch vw-0-nullable-vuln-fields

📝 Coding Plan

• Generate coding plan for human review comments

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