Feature flag rollout: vulnerability_malware_detection
> This issue was previously the rollout issue for `malicious_vulnerability_filter_group` and `malicious_vulnerability_filter_project`. Both flags have been removed. The issue has been retitled and repurposed because `config/feature_flags/beta/vulnerability_malware_detection.yml` sets its `rollout_issue_url` to this issue. Comments predating 2026-08-26 refer to the old flags; flag-state change log entries from 2026-08-26 onward refer to the current flag.
## Summary
Rollout issue for the `vulnerability_malware_detection` feature flag, introduced in https://gitlab.com/gitlab-org/gitlab/-/merge_requests/249360. The flag consolidates four previously separate gates on malware-related vulnerability functionality into one flag with widened actor resolution.
## What this flag replaces
This is not a new capability, it is a consolidation. The following are all removed from master and superseded by `vulnerability_malware_detection`:
- `malicious_vulnerability_filter_project` and `malicious_vulnerability_filter_group`, which gated the `malware` filter argument on the `vulnerabilities` and `vulnerabilitySeveritiesCount` GraphQL queries in `ee/app/graphql/resolvers/vulnerability_filterable.rb`.
- `sscs_malware_detection`, which gated `Vulnerabilities::MalwareDetection.malware_detection_enabled_for?`, and therefore whether `Vulnerability#malware` was exposed at all.
- The vulnerability-report half of the frontend flag `malicious_package_detection`, split out by https://gitlab.com/gitlab-org/gitlab/-/merge_requests/249418 into its own frontend flag, `vulnerabilityMalwareDetection`.
## Feature flag
| Flag | Type | Actor | Default |
|---|---|---|---|
| `vulnerability_malware_detection` | beta | Project or Group | disabled |
- Milestone: 19.0
- Group: group::vulnerability management
- Feature issue: https://gitlab.com/gitlab-org/gitlab/-/work_items/587647
## Surfaces gated
Backend:
| Surface | What it gates |
|---|---|
| GraphQL `VulnerabilityType` | the `malware` field (`ee/app/graphql/types/vulnerability_type.rb`) |
| Vulnerability entity serializer | the `malware` key |
| `Resolvers::VulnerabilitiesResolver` | the `malware` filter argument |
Frontend (flag is pushed to the browser as `vulnerabilityMalwareDetection` via `push_force_frontend_feature_flag` from `Projects::Security::VulnerabilitiesController`, `Projects::Security::VulnerabilityReportController` and `Groups::Security::VulnerabilitiesController`):
| Surface | What it gates |
|---|---|
| Vulnerability report list (`vulnerability_list.vue`) | malware badge |
| Vulnerability report filtered search (`vulnerability_report_filtered_search.vue`) | malware filter token |
| Vulnerability details page (`footer.vue`, `vulnerability_details.vue`, `vulnerability_details_enrichment/risk.vue`, `vulnerability_details_enrichment/remediation.vue`) | malware panels/sections |
## Actor resolution
`Project#vulnerability_malware_detection_feature_flag_enabled?` returns `group&.vulnerability_malware_detection_feature_flag_enabled? || Feature.enabled?(:vulnerability_malware_detection, self, type: :beta)`, and the `Group` equivalent uses `feature_flag_enabled_for_self_or_ancestor?`. This means the flag can be enabled on a project directly, or on any ancestor group, and enablement cascades down to descendants. This is a widening compared to the old `malicious_package_detection` flag, which was pushed with `root_ancestor` as the actor.
## What could go wrong
- The `malware` filter is implemented only in the Elasticsearch path (`by_malware` in `ee/lib/search/elastic/vulnerability_filters.rb`). It has no equivalent in the Postgres finder. The filter therefore requires advanced search configured and advanced vulnerability management enabled; without those, the filter token is visible but filtering silently does nothing.
- Otherwise the blast radius is read-only: badge rendering and query filtering, with no write path affected.
## Current rollout state
- Enabled on `pre` (2026-08-26).
- Enabled on `gprd` scoped to a single project (2026-08-26).
## Rollout steps
Non-production:
```
/chatops gitlab run feature set vulnerability_malware_detection true --dev --pre --staging --staging-ref
```
Production, staged percentage rollout:
```
/chatops gitlab run feature set vulnerability_malware_detection 10 --actors
/chatops gitlab run feature set vulnerability_malware_detection 50 --actors
/chatops gitlab run feature set vulnerability_malware_detection 100 --actors
```
- [ ] Enabled on non-production environments
- [ ] Enabled on 10% of actors in production
- [ ] Enabled on 50% of actors in production
- [ ] Enabled on 100% of actors in production
- [ ] Confirmed no regressions
## Verification checklist
- [ ] Malware badge appears on the vulnerability report list for affected vulnerabilities
- [ ] Malware filter token appears in the vulnerability report filtered search, and filters results when advanced search and advanced vulnerability management are configured
- [ ] Vulnerability details page shows malware-related panels (footer, risk, remediation)
- [ ] GraphQL `malware` field on `VulnerabilityType` returns data as expected
## Rollback
```
/chatops gitlab run feature set vulnerability_malware_detection false --actors
/chatops gitlab run feature set vulnerability_malware_detection false --dev --pre --staging --staging-ref
```
## Cleanup
- [ ] Remove the `Feature.enabled?(:vulnerability_malware_detection, ...)` checks
- [ ] Delete `config/feature_flags/beta/vulnerability_malware_detection.yml`
- [ ] Run:
```
/chatops gitlab run feature delete vulnerability_malware_detection --dev --pre --staging --staging-ref --production
```
## Related
- Sibling flag rollout for `dependency_malware_detection`: https://gitlab.com/gitlab-org/gitlab/-/issues/611434
- Consolidation merge requests: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/249360, https://gitlab.com/gitlab-org/gitlab/-/merge_requests/249418, https://gitlab.com/gitlab-org/gitlab/-/merge_requests/251948
- Feature issue: https://gitlab.com/gitlab-org/gitlab/-/work_items/587647
- Parent epic: https://gitlab.com/groups/gitlab-org/-/work_items/18456
issue
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