diff --git a/cmd/releasekit/ci_identity_test.go b/cmd/releasekit/ci_identity_test.go
new file mode 100644
index 0000000..1f1bb47
--- /dev/null
+++ b/cmd/releasekit/ci_identity_test.go
@@ -0,0 +1,60 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"go.maximumdirect.net/releasekit/cmd/releasekit/internal/cli"
+)
+
+func TestCIDeliveryRejectsModuleTagMismatchBeforePreparation(t *testing.T) {
+	for _, binary := range []bool{false, true} {
+		name := "page-only"
+		if binary {
+			name = "binary"
+		}
+		t.Run(name, func(t *testing.T) {
+			repository := newDeliveryBuildRepository(t)
+			writeRepositoryFile(t, repository, "child/go.mod", "module example.com/tagged-app/child\n\ngo 1.26.0\n")
+			writeRepositoryFile(t, repository, "child/docs/releases/v1.2.3.md", "# Example Product v1.2.3\n\nChild release.\n")
+			cliGitRun(t, repository, "add", "child")
+			cliGitRun(t, repository, "commit", "-m", "add child module")
+			server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				t.Errorf("mismatched module tag reached forge: %s", r.URL.Path)
+				http.Error(w, "unexpected request", http.StatusInternalServerError)
+			}))
+			defer server.Close()
+			settings := cli.Settings{
+				Product: "Example Product", ModuleDir: "child",
+				Delivery: &cli.DeliverySettings{Forge: "gitea", BaseURL: server.URL, Owner: "owner", Repository: "example"},
+			}
+			if binary {
+				settings.Build = &cli.BuildSettings{MainPackage: ".", BinaryName: "helper", Targets: []string{"linux/amd64"}}
+			}
+			writeDeliveryProfile(t, repository, settings)
+			commit := pushTaggedCLIRepository(t, repository)
+			t.Setenv("RELEASEKIT_GITEA_TOKEN", "fixture-token")
+			shimDir := t.TempDir()
+			marker := filepath.Join(shimDir, "go-invoked")
+			if err := os.WriteFile(filepath.Join(shimDir, "go"), []byte("#!/bin/sh\n: > \"$RELEASEKIT_GO_MARKER\"\nexit 99\n"), 0o700); err != nil {
+				t.Fatal(err)
+			}
+			t.Setenv("RELEASEKIT_GO_MARKER", marker)
+			t.Setenv("PATH", shimDir+string(os.PathListSeparator)+os.Getenv("PATH"))
+			var stdout, stderr bytes.Buffer
+			status := run(context.Background(), []string{"ci-deliver", "--repo", repository, "--prepared", "--commit", commit, "--expected-module", "child", "v1.2.3"}, &stdout, &stderr)
+			if status != 1 || !strings.Contains(stderr.String(), `expected delivery tag "v1.2.3"`) || !strings.Contains(stderr.String(), `selected module tag "child/v1.2.3"`) {
+				t.Fatalf("status=%d stderr=%q, want module tag mismatch", status, stderr.String())
+			}
+			if _, err := os.Stat(marker); !os.IsNotExist(err) {
+				t.Fatalf("dependency/build work ran before tag comparison: %v", err)
+			}
+		})
+	}
+}
diff --git a/cmd/releasekit/main.go b/cmd/releasekit/main.go
index f15636f..1869463 100644
--- a/cmd/releasekit/main.go
+++ b/cmd/releasekit/main.go
@@ -291,6 +291,15 @@ func runCIDelivery(ctx context.Context, invocation cli.Invocation, stdout, stder
 		fmt.Fprintf(stderr, "profile module selection: %v\n", err)
 		return 2
 	}
+	identity, err := releaseidentity.FromCommitted(ctx, invocation.Repository, settings.ModuleDir, invocation.Version, invocation.Commit)
+	if err != nil {
+		fmt.Fprintf(stderr, "resolve CI release identity: %v\n", err)
+		return 1
+	}
+	if invocation.ExpectedTag != identity.Tag {
+		fmt.Fprintf(stderr, "expected delivery tag %q does not match selected module tag %q\n", invocation.ExpectedTag, identity.Tag)
+		return 1
+	}
 	destination, status := deliveryDestination(invocation.Repository, settings, stderr)
 	if status != 0 {
 		return status
diff --git a/docs/cli.md b/docs/cli.md
index f86af72..9e86c31 100644
--- a/docs/cli.md
+++ b/docs/cli.md
@@ -244,9 +244,11 @@ verifies the tag, HEAD, and clean worktree. With `--prepared`, it performs those
 checks read-only against the existing checkout and does not fetch or check out.
 In either mode, it loads the profile from the verified source. `--expected-module`
 optionally checks that the profile selects the module chosen by a launcher;
-module selection itself remains profile-owned. The command validates explicit
-forge selection and resolves the configured token. For binary profiles, it
-performs a read-only repository preflight before downloading application
+module selection itself remains profile-owned. The command compares the selected
+module's derived release tag with the full event tag before forge access or
+dependency preparation, then validates explicit forge selection and resolves
+the configured token. For binary profiles, it performs a read-only repository
+preflight before downloading application
 dependencies; delivery performs a fresh check after dependency preparation.
 Source-only profiles rely on delivery's automatic preflight and skip dependency
 downloads and binary builds.
diff --git a/docs/roadmap/remediation.md b/docs/roadmap/remediation.md
index d4f12be..10dd5ac 100644
--- a/docs/roadmap/remediation.md
+++ b/docs/roadmap/remediation.md
@@ -197,7 +197,15 @@ cleanup; this finding does not require removing plans now.
 
 ## 5. Bind CI release identity before online preflight and preparation — P2
 
-Status: open.
+Status: complete.
+
+**Completed:** CI now derives the selected module identity from the verified
+event commit and checks the complete tag before credential loading, forge
+requests, or dependency preparation. The optional launcher-module guard and
+delivery's later source/preflight verification retain their responsibilities.
+A focused page-only/binary regression covers a matching launcher selection
+with a mismatched derived tag and verifies no forge or Go-tool work. That test
+and existing valid CI/preflight/managed-delivery tests passed.
 
 **Evidence:** [CI adapter](../../cmd/releasekit/main.go), especially
 `runCIDelivery` and `checkExpectedModule`, and the existing identity/tag checks