# PR-1 Backend Implementation Status

Date: 2026-02-18
Scope: PR-1 backend high-risk findings only (`go/log-injection`, `go/cookie-secure-not-set`)

## Files Touched (Backend PR-1)

- `backend/internal/api/handlers/auth_handler.go`
- `backend/internal/api/handlers/backup_handler.go`
- `backend/internal/api/handlers/crowdsec_handler.go`
- `backend/internal/api/handlers/docker_handler.go`
- `backend/internal/api/handlers/emergency_handler.go`
- `backend/internal/api/handlers/proxy_host_handler.go`
- `backend/internal/api/handlers/security_handler.go`
- `backend/internal/api/handlers/settings_handler.go`
- `backend/internal/api/handlers/uptime_handler.go`
- `backend/internal/api/handlers/user_handler.go`
- `backend/internal/api/middleware/emergency.go`
- `backend/internal/cerberus/cerberus.go`
- `backend/internal/cerberus/rate_limit.go`
- `backend/internal/crowdsec/console_enroll.go`
- `backend/internal/crowdsec/hub_cache.go`
- `backend/internal/crowdsec/hub_sync.go`
- `backend/internal/server/emergency_server.go`
- `backend/internal/services/backup_service.go`
- `backend/internal/services/emergency_token_service.go`
- `backend/internal/services/mail_service.go`
- `backend/internal/services/manual_challenge_service.go`
- `backend/internal/services/uptime_service.go`

## Diff Inspection Outcome

Backend PR-1 remediations were completed with focused logging hardening in scoped files:

- user-influenced values at flagged sinks sanitized or removed from log fields
- residual sink lines were converted to static/non-tainted log messages where required by CodeQL taint flow
- cookie secure logic remains enforced in `auth_handler.go` (`secure := true` path)

No PR-2/PR-3 remediation work was applied in this backend status slice.

## Commands Run

1. Targeted backend tests (changed backend areas)
   - `go test ./internal/services -count=1`
   - `go test ./internal/server -count=1`
   - `go test ./internal/api/handlers -run ProxyHost -count=1`
   - Result: passed

2. CI-aligned Go CodeQL scan
   - Task: `Security: CodeQL Go Scan (CI-Aligned) [~60s]`
   - Result: completed
   - Output artifact: `/projects/Charon/codeql-results-go.sarif`

3. SARIF verification (post-final scan)
   - `jq -r '.runs[0].results | length' /projects/Charon/codeql-results-go.sarif`
   - Result: `0`

   - `jq` rule checks for:
     - `go/log-injection`
     - `go/cookie-secure-not-set`
   - Result: no matches for both rules

## PR-1 Backend Status

- `go/log-injection`: cleared for current backend PR-1 scope in latest CI-aligned local SARIF.
- `go/cookie-secure-not-set`: cleared in latest CI-aligned local SARIF.

## Remaining Blockers

- None.

## Final Status

DONE