diff --git a/backend/cmd/api/main_test.go b/backend/cmd/api/main_test.go
index 69bc5a9c..d260b552 100644
--- a/backend/cmd/api/main_test.go
+++ b/backend/cmd/api/main_test.go
@@ -311,7 +311,8 @@ func TestMain_DefaultStartupGracefulShutdown_Subprocess(t *testing.T) {
 	if err != nil {
 		t.Fatalf("find free http port: %v", err)
 	}
-	if err := os.MkdirAll(filepath.Dir(dbPath), 0o750); err != nil {
+	err = os.MkdirAll(filepath.Dir(dbPath), 0o750)
+	if err != nil {
 		t.Fatalf("mkdir db dir: %v", err)
 	}
 
diff --git a/backend/cmd/localpatchreport/main.go b/backend/cmd/localpatchreport/main.go
index 74d8ec0e..479b2d36 100644
--- a/backend/cmd/localpatchreport/main.go
+++ b/backend/cmd/localpatchreport/main.go
@@ -64,11 +64,13 @@ func main() {
 	jsonOutPath := resolvePath(repoRoot, *jsonOutFlag)
 	mdOutPath := resolvePath(repoRoot, *mdOutFlag)
 
-	if err := assertFileExists(backendCoveragePath, "backend coverage file"); err != nil {
+	err = assertFileExists(backendCoveragePath, "backend coverage file")
+	if err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		os.Exit(1)
 	}
-	if err := assertFileExists(frontendCoveragePath, "frontend coverage file"); err != nil {
+	err = assertFileExists(frontendCoveragePath, "frontend coverage file")
+	if err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		os.Exit(1)
 	}
diff --git a/backend/cmd/localpatchreport/main_test.go b/backend/cmd/localpatchreport/main_test.go
index df04b8f8..a7e2a758 100644
--- a/backend/cmd/localpatchreport/main_test.go
+++ b/backend/cmd/localpatchreport/main_test.go
@@ -235,7 +235,8 @@ func TestGitDiffAndWriters(t *testing.T) {
 		t.Fatalf("expected empty diff for HEAD...HEAD, got: %q", diffContent)
 	}
 
-	if _, err := gitDiff(repoRoot, "bad-baseline"); err == nil {
+	_, err = gitDiff(repoRoot, "bad-baseline")
+	if err == nil {
 		t.Fatal("expected gitDiff failure for invalid baseline")
 	}
 
@@ -263,7 +264,8 @@ func TestGitDiffAndWriters(t *testing.T) {
 	}
 
 	jsonPath := filepath.Join(t.TempDir(), "report.json")
-	if err := writeJSON(jsonPath, report); err != nil {
+	err = writeJSON(jsonPath, report)
+	if err != nil {
 		t.Fatalf("writeJSON should succeed: %v", err)
 	}
 	// #nosec G304 -- Test reads artifact path created by this test.
@@ -276,7 +278,8 @@ func TestGitDiffAndWriters(t *testing.T) {
 	}
 
 	markdownPath := filepath.Join(t.TempDir(), "report.md")
-	if err := writeMarkdown(markdownPath, report, "backend/coverage.txt", "frontend/coverage/lcov.info"); err != nil {
+	err = writeMarkdown(markdownPath, report, "backend/coverage.txt", "frontend/coverage/lcov.info")
+	if err != nil {
 		t.Fatalf("writeMarkdown should succeed: %v", err)
 	}
 	// #nosec G304 -- Test reads artifact path created by this test.
diff --git a/backend/internal/api/handlers/auth_handler.go b/backend/internal/api/handlers/auth_handler.go
index 28695ec8..32923426 100644
--- a/backend/internal/api/handlers/auth_handler.go
+++ b/backend/internal/api/handlers/auth_handler.go
@@ -127,18 +127,17 @@ func isLocalRequest(c *gin.Context) bool {
 
 // setSecureCookie sets an auth cookie with security best practices
 // - HttpOnly: prevents JavaScript access (XSS protection)
-// - Secure: derived from request scheme to allow HTTP/IP logins when needed
+// - Secure: always true to prevent cookie transmission over cleartext channels
 // - SameSite: Strict for HTTPS, Lax for HTTP/IP to allow forward-auth redirects
 func setSecureCookie(c *gin.Context, name, value string, maxAge int) {
 	scheme := requestScheme(c)
-	secure := scheme == "https"
+	secure := true
 	sameSite := http.SameSiteStrictMode
 	if scheme != "https" {
 		sameSite = http.SameSiteLaxMode
 	}
 
 	if isLocalRequest(c) {
-		secure = false
 		sameSite = http.SameSiteLaxMode
 	}
 
@@ -152,7 +151,7 @@ func setSecureCookie(c *gin.Context, name, value string, maxAge int) {
 		maxAge, // maxAge in seconds
 		"/",    // path
 		domain, // domain (empty = current host)
-		secure, // secure (HTTPS only in production)
+		secure, // secure (always true)
 		true,   // httpOnly (no JS access)
 	)
 }
diff --git a/backend/internal/api/handlers/auth_handler_test.go b/backend/internal/api/handlers/auth_handler_test.go
index 4241adea..ca4b1daf 100644
--- a/backend/internal/api/handlers/auth_handler_test.go
+++ b/backend/internal/api/handlers/auth_handler_test.go
@@ -94,7 +94,7 @@ func TestSetSecureCookie_HTTP_Lax(t *testing.T) {
 	cookies := recorder.Result().Cookies()
 	require.Len(t, cookies, 1)
 	c := cookies[0]
-	assert.False(t, c.Secure)
+	assert.True(t, c.Secure)
 	assert.Equal(t, http.SameSiteLaxMode, c.SameSite)
 }
 
@@ -115,7 +115,7 @@ func TestSetSecureCookie_ForwardedHTTPS_LocalhostForcesInsecure(t *testing.T) {
 	cookies := recorder.Result().Cookies()
 	require.Len(t, cookies, 1)
 	cookie := cookies[0]
-	assert.False(t, cookie.Secure)
+	assert.True(t, cookie.Secure)
 	assert.Equal(t, http.SameSiteLaxMode, cookie.SameSite)
 }
 
@@ -136,7 +136,7 @@ func TestSetSecureCookie_ForwardedHTTPS_LoopbackForcesInsecure(t *testing.T) {
 	cookies := recorder.Result().Cookies()
 	require.Len(t, cookies, 1)
 	cookie := cookies[0]
-	assert.False(t, cookie.Secure)
+	assert.True(t, cookie.Secure)
 	assert.Equal(t, http.SameSiteLaxMode, cookie.SameSite)
 }
 
@@ -158,7 +158,7 @@ func TestSetSecureCookie_ForwardedHostLocalhostForcesInsecure(t *testing.T) {
 	cookies := recorder.Result().Cookies()
 	require.Len(t, cookies, 1)
 	cookie := cookies[0]
-	assert.False(t, cookie.Secure)
+	assert.True(t, cookie.Secure)
 	assert.Equal(t, http.SameSiteLaxMode, cookie.SameSite)
 }
 
@@ -180,7 +180,7 @@ func TestSetSecureCookie_OriginLoopbackForcesInsecure(t *testing.T) {
 	cookies := recorder.Result().Cookies()
 	require.Len(t, cookies, 1)
 	cookie := cookies[0]
-	assert.False(t, cookie.Secure)
+	assert.True(t, cookie.Secure)
 	assert.Equal(t, http.SameSiteLaxMode, cookie.SameSite)
 }
 
diff --git a/backend/internal/notifications/http_wrapper.go b/backend/internal/notifications/http_wrapper.go
index aa1da80b..3864b2b8 100644
--- a/backend/internal/notifications/http_wrapper.go
+++ b/backend/internal/notifications/http_wrapper.go
@@ -82,13 +82,22 @@ func (w *HTTPWrapper) Send(ctx context.Context, request HTTPWrapperRequest) (*HT
 		return nil, err
 	}
 
+	parsedValidatedURL, err := neturl.Parse(validatedURL)
+	if err != nil {
+		return nil, fmt.Errorf("destination URL validation failed")
+	}
+
+	if err := w.guardDestination(parsedValidatedURL); err != nil {
+		return nil, err
+	}
+
 	headers := sanitizeOutboundHeaders(request.Headers)
 	client := w.httpClientFactory(w.allowHTTP, w.maxRedirects)
 	w.applyRedirectGuard(client)
 
 	var lastErr error
 	for attempt := 1; attempt <= w.retryPolicy.MaxAttempts; attempt++ {
-		httpReq, reqErr := http.NewRequestWithContext(ctx, http.MethodPost, validatedURL, bytes.NewReader(request.Body))
+		httpReq, reqErr := http.NewRequestWithContext(ctx, http.MethodPost, parsedValidatedURL.String(), bytes.NewReader(request.Body))
 		if reqErr != nil {
 			return nil, fmt.Errorf("create outbound request: %w", reqErr)
 		}
@@ -101,10 +110,27 @@ func (w *HTTPWrapper) Send(ctx context.Context, request HTTPWrapperRequest) (*HT
 			httpReq.Header.Set("Content-Type", "application/json")
 		}
 
-		if guardErr := w.guardOutboundRequestURL(httpReq); guardErr != nil {
+		validationOptions := []security.ValidationOption{}
+		if w.allowHTTP {
+			validationOptions = append(validationOptions, security.WithAllowHTTP(), security.WithAllowLocalhost())
+		}
+
+		safeURL, safeURLErr := security.ValidateExternalURL(httpReq.URL.String(), validationOptions...)
+		if safeURLErr != nil {
+			return nil, fmt.Errorf("destination URL validation failed")
+		}
+
+		safeParsedURL, safeParseErr := neturl.Parse(safeURL)
+		if safeParseErr != nil {
+			return nil, fmt.Errorf("destination URL validation failed")
+		}
+
+		if guardErr := w.guardDestination(safeParsedURL); guardErr != nil {
 			return nil, guardErr
 		}
 
+		httpReq.URL = safeParsedURL
+
 		resp, doErr := client.Do(httpReq)
 		if doErr != nil {
 			lastErr = doErr
@@ -210,13 +236,79 @@ func (w *HTTPWrapper) guardOutboundRequestURL(httpReq *http.Request) error {
 		return err
 	}
 
-	if validatedURL != reqURL {
+	parsedValidatedURL, err := neturl.Parse(validatedURL)
+	if err != nil {
 		return fmt.Errorf("destination URL validation failed")
 	}
 
+	return w.guardDestination(parsedValidatedURL)
+}
+
+func (w *HTTPWrapper) guardDestination(destinationURL *neturl.URL) error {
+	if destinationURL == nil {
+		return fmt.Errorf("destination URL validation failed")
+	}
+
+	if destinationURL.User != nil || destinationURL.Fragment != "" {
+		return fmt.Errorf("destination URL validation failed")
+	}
+
+	hostname := strings.TrimSpace(destinationURL.Hostname())
+	if hostname == "" {
+		return fmt.Errorf("destination URL validation failed")
+	}
+
+	if parsedIP := net.ParseIP(hostname); parsedIP != nil {
+		if !w.isAllowedDestinationIP(hostname, parsedIP) {
+			return fmt.Errorf("destination URL validation failed")
+		}
+		return nil
+	}
+
+	resolvedIPs, err := net.LookupIP(hostname)
+	if err != nil || len(resolvedIPs) == 0 {
+		return fmt.Errorf("destination URL validation failed")
+	}
+
+	for _, resolvedIP := range resolvedIPs {
+		if !w.isAllowedDestinationIP(hostname, resolvedIP) {
+			return fmt.Errorf("destination URL validation failed")
+		}
+	}
+
 	return nil
 }
 
+func (w *HTTPWrapper) isAllowedDestinationIP(hostname string, ip net.IP) bool {
+	if ip == nil {
+		return false
+	}
+
+	if ip.IsUnspecified() || ip.IsMulticast() || ip.IsLinkLocalUnicast() || ip.IsLinkLocalMulticast() {
+		return false
+	}
+
+	if ip.IsLoopback() {
+		return w.allowHTTP && isLocalDestinationHost(hostname)
+	}
+
+	if network.IsPrivateIP(ip) {
+		return false
+	}
+
+	return true
+}
+
+func isLocalDestinationHost(host string) bool {
+	trimmedHost := strings.TrimSpace(host)
+	if strings.EqualFold(trimmedHost, "localhost") {
+		return true
+	}
+
+	parsedIP := net.ParseIP(trimmedHost)
+	return parsedIP != nil && parsedIP.IsLoopback()
+}
+
 func shouldRetry(resp *http.Response, err error) bool {
 	if err != nil {
 		var netErr net.Error
diff --git a/backend/internal/notifications/http_wrapper_test.go b/backend/internal/notifications/http_wrapper_test.go
index 085f2b79..04f0a70f 100644
--- a/backend/internal/notifications/http_wrapper_test.go
+++ b/backend/internal/notifications/http_wrapper_test.go
@@ -274,3 +274,24 @@ func TestHTTPWrapperGuardOutboundRequestURLAllowsValidatedDestination(t *testing
 		t.Fatalf("expected validated destination to pass guard, got: %v", err)
 	}
 }
+
+func TestHTTPWrapperGuardOutboundRequestURLRejectsUserInfo(t *testing.T) {
+	wrapper := NewNotifyHTTPWrapper()
+	wrapper.allowHTTP = true
+
+	httpReq := &http.Request{URL: &neturl.URL{Scheme: "http", Host: "127.0.0.1", User: neturl.UserPassword("user", "pass"), Path: "/hook"}}
+	err := wrapper.guardOutboundRequestURL(httpReq)
+	if err == nil || !strings.Contains(err.Error(), "destination URL validation failed") {
+		t.Fatalf("expected userinfo rejection, got: %v", err)
+	}
+}
+
+func TestHTTPWrapperGuardOutboundRequestURLRejectsFragment(t *testing.T) {
+	wrapper := NewNotifyHTTPWrapper()
+
+	httpReq := &http.Request{URL: &neturl.URL{Scheme: "https", Host: "example.com", Path: "/hook", Fragment: "frag"}}
+	err := wrapper.guardOutboundRequestURL(httpReq)
+	if err == nil || !strings.Contains(err.Error(), "destination URL validation failed") {
+		t.Fatalf("expected fragment rejection, got: %v", err)
+	}
+}
diff --git a/backend/internal/services/enhanced_security_notification_service.go b/backend/internal/services/enhanced_security_notification_service.go
index 9754aef6..a6495d2d 100644
--- a/backend/internal/services/enhanced_security_notification_service.go
+++ b/backend/internal/services/enhanced_security_notification_service.go
@@ -394,8 +394,8 @@ func (s *EnhancedSecurityNotificationService) MigrateFromLegacyConfig() error {
 				NotifySecurityRateLimitHits: legacyConfig.NotifyRateLimitHits,
 				URL:                         legacyConfig.WebhookURL,
 			}
-			if err := tx.Create(&provider).Error; err != nil {
-				return fmt.Errorf("create managed provider: %w", err)
+			if createErr := tx.Create(&provider).Error; createErr != nil {
+				return fmt.Errorf("create managed provider: %w", createErr)
 			}
 		} else if err != nil {
 			return fmt.Errorf("query managed provider: %w", err)
@@ -405,8 +405,8 @@ func (s *EnhancedSecurityNotificationService) MigrateFromLegacyConfig() error {
 			provider.NotifySecurityACLDenies = legacyConfig.NotifyACLDenies
 			provider.NotifySecurityRateLimitHits = legacyConfig.NotifyRateLimitHits
 			provider.URL = legacyConfig.WebhookURL
-			if err := tx.Save(&provider).Error; err != nil {
-				return fmt.Errorf("update managed provider: %w", err)
+			if saveErr := tx.Save(&provider).Error; saveErr != nil {
+				return fmt.Errorf("update managed provider: %w", saveErr)
 			}
 		}
 
@@ -430,7 +430,7 @@ func (s *EnhancedSecurityNotificationService) MigrateFromLegacyConfig() error {
 		}
 
 		// Upsert marker
-		if err := tx.Where("key = ?", newMarkerSetting.Key).First(&markerSetting).Error; err == gorm.ErrRecordNotFound {
+		if queryErr := tx.Where("key = ?", newMarkerSetting.Key).First(&markerSetting).Error; queryErr == gorm.ErrRecordNotFound {
 			return tx.Create(&newMarkerSetting).Error
 		}
 		newMarkerSetting.ID = markerSetting.ID
diff --git a/backend/internal/services/enhanced_security_notification_service_discord_only_test.go b/backend/internal/services/enhanced_security_notification_service_discord_only_test.go
index 6a5611ce..a05230f4 100644
--- a/backend/internal/services/enhanced_security_notification_service_discord_only_test.go
+++ b/backend/internal/services/enhanced_security_notification_service_discord_only_test.go
@@ -60,8 +60,8 @@ func TestDiscordOnly_DispatchToProviderAcceptsDiscord(t *testing.T) {
 
 		// Verify payload structure
 		var payload models.SecurityEvent
-		err := json.NewDecoder(r.Body).Decode(&payload)
-		assert.NoError(t, err)
+		decodeErr := json.NewDecoder(r.Body).Decode(&payload)
+		assert.NoError(t, decodeErr)
 		assert.Equal(t, "waf_block", payload.EventType)
 
 		w.WriteHeader(http.StatusOK)
diff --git a/backend/internal/services/notification_service.go b/backend/internal/services/notification_service.go
index 99f7863f..e8a9ce5e 100644
--- a/backend/internal/services/notification_service.go
+++ b/backend/internal/services/notification_service.go
@@ -383,12 +383,12 @@ func (s *NotificationService) sendJSONPayload(ctx context.Context, p models.Noti
 			}
 		}
 
-		if _, err := s.httpWrapper.Send(ctx, notifications.HTTPWrapperRequest{
+		if _, sendErr := s.httpWrapper.Send(ctx, notifications.HTTPWrapperRequest{
 			URL:     p.URL,
 			Headers: headers,
 			Body:    body.Bytes(),
-		}); err != nil {
-			return fmt.Errorf("failed to send webhook: %w", err)
+		}); sendErr != nil {
+			return fmt.Errorf("failed to send webhook: %w", sendErr)
 		}
 		return nil
 	}
diff --git a/docs/plans/current_spec.md b/docs/plans/current_spec.md
index 4d2aa276..1a4bb74c 100644
--- a/docs/plans/current_spec.md
+++ b/docs/plans/current_spec.md
@@ -464,3 +464,65 @@ If compatibility uploads create noise, duplicate alert confusion, or unstable ch
 
 - **PR-1 (recommended single PR, low-risk additive):** add compatibility SARIF uploads in `docker-build.yml` (`scan-pr-image`) with SARIF existence guards, `continue-on-error` on compatibility uploads, and mandatory non-PR category hardening, plus brief inline rationale comments.
 - **PR-2 (cleanup PR, delayed):** remove `.github/workflows/docker-publish.yml:build-and-push` compatibility upload after stabilization window and verify no warning recurrence.
+
+---
+
+## CodeQL Targeted Remediation Plan — Current Findings (2026-02-24)
+
+Status: Planned (minimal and surgical)
+Scope: Three current findings only; no broad refactors; no suppression-first approach.
+
+### Implementation Order (behavior-safe)
+
+1. **Frontend low-risk correctness fix first**
+  - Resolve `js/comparison-between-incompatible-types` in `frontend/src/components/CredentialManager.tsx`.
+  - Reason: isolated UI logic change with lowest regression risk.
+
+2. **Cookie security hardening second**
+  - Resolve `go/cookie-secure-not-set` in `backend/internal/api/handlers/auth_handler.go`.
+  - Reason: auth behavior impact is manageable with existing token-in-response fallback.
+
+3. **SSRF/request-forgery hardening last**
+  - Resolve `go/request-forgery` in `backend/internal/notifications/http_wrapper.go`.
+  - Reason: highest security sensitivity; keep changes narrowly at request sink path.
+
+### File-Level Actions
+
+1. **`frontend/src/components/CredentialManager.tsx`** (`js/comparison-between-incompatible-types`)
+  - Remove the redundant null comparison that is always true in the guarded render path (line currently flagged around delete-confirm dialog open state).
+  - Keep existing dialog UX and delete flow unchanged.
+  - Prefer direct logic cleanup (real fix), not query suppression.
+
+2. **`backend/internal/api/handlers/auth_handler.go`** (`go/cookie-secure-not-set`)
+  - Ensure auth cookie emission is secure-by-default and does not set insecure auth cookies on non-HTTPS requests.
+  - Preserve login behavior by continuing to return token in response body for non-cookie fallback clients.
+  - Add/update targeted tests to verify:
+    - secure flag is set for HTTPS auth cookie,
+    - no insecure auth cookie path is emitted,
+    - login/refresh/logout flows remain functional.
+
+3. **`backend/internal/notifications/http_wrapper.go`** (`go/request-forgery`)
+  - Strengthen sink-adjacent outbound validation before network send:
+    - enforce parsed host/IP re-validation immediately before `client.Do`,
+    - verify resolved destination IPs are not loopback/private/link-local/multicast/unspecified,
+    - keep existing HTTPS/query-auth restrictions and retry behavior intact.
+  - Add/update focused wrapper tests for blocked internal targets and allowed public targets.
+  - Prefer explicit validation controls over suppression annotations.
+
+### Post-Fix Validation Commands (exact)
+
+1. **Targeted tests**
+  - `cd /projects/Charon && go test ./backend/internal/notifications -count=1`
+  - `cd /projects/Charon && go test ./backend/internal/api/handlers -count=1`
+  - `cd /projects/Charon/frontend && npm run test -- src/components/__tests__/CredentialManager.test.tsx`
+
+2. **Lint / type-check**
+  - `cd /projects/Charon && make lint-fast`
+  - `cd /projects/Charon/frontend && npm run type-check`
+
+3. **CodeQL scans (CI-aligned local scripts)**
+  - `cd /projects/Charon && bash scripts/pre-commit-hooks/codeql-go-scan.sh`
+  - `cd /projects/Charon && bash scripts/pre-commit-hooks/codeql-js-scan.sh`
+
+4. **Findings gate**
+  - `cd /projects/Charon && bash scripts/pre-commit-hooks/codeql-check-findings.sh`