feat: Add strict trace continuation support

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 ### Features
 
+- Prevent cross-organization trace continuation ([#5136](https://github.com/getsentry/sentry-java/pull/5136))
+  - By default, the SDK now extracts the organization ID from the DSN (e.g. `o123.ingest.sentry.io`) and compares it with the `sentry-org_id` value in incoming baggage headers. When the two differ, the SDK starts a fresh trace instead of continuing the foreign one. This guards against accidentally linking traces across organizations.
+  - New option `enableStrictTraceContinuation` (default `false`): when enabled, both the SDK's org ID **and** the incoming baggage org ID must be present and match for a trace to be continued. Traces with a missing org ID on either side are rejected. Configurable via code (`setStrictTraceContinuation(true)`), `sentry.properties` (`enable-strict-trace-continuation=true`), Android manifest (`io.sentry.strict-trace-continuation.enabled`), or Spring Boot (`sentry.strict-trace-continuation=true`).
+  - New option `orgId`: allows explicitly setting the organization ID for self-hosted and Relay setups where it cannot be extracted from the DSN. Configurable via code (`setOrgId("123")`), `sentry.properties` (`org-id=123`), Android manifest (`io.sentry.org-id`), or Spring Boot (`sentry.org-id=123`).
 - Android: Attachments on the scope will now be synced to native ([#5211](https://github.com/getsentry/sentry-java/pull/5211))
 - Add THIRD_PARTY_NOTICES.md for vendored third-party code, bundled as SENTRY_THIRD_PARTY_NOTICES.md in the sentry JAR under META-INF ([#5186](https://github.com/getsentry/sentry-java/pull/5186))
 

sentry-android-core/src/main/java/io/sentry/android/core/ManifestMetadataReader.java

@@ -167,6 +167,9 @@ final class ManifestMetadataReader {
 
   static final String FEEDBACK_SHOW_BRANDING = "io.sentry.feedback.show-branding";
 
+  static final String STRICT_TRACE_CONTINUATION = "io.sentry.strict-trace-continuation.enabled";
+  static final String ORG_ID = "io.sentry.org-id";
+
   static final String FEEDBACK_USE_SHAKE_GESTURE = "io.sentry.feedback.use-shake-gesture";
 
   static final String SPOTLIGHT_ENABLE = "io.sentry.spotlight.enable";
@@ -667,6 +670,15 @@ static void applyMetadata(
             readBool(
                 metadata, logger, FEEDBACK_USE_SHAKE_GESTURE, feedbackOptions.isUseShakeGesture()));
 
+        options.setStrictTraceContinuation(
+            readBool(
+                metadata, logger, STRICT_TRACE_CONTINUATION, options.isStrictTraceContinuation()));
+
+        final @Nullable String orgId = readString(metadata, logger, ORG_ID, null);
+        if (orgId != null) {
+          options.setOrgId(orgId);
+        }
+
         options.setEnableSpotlight(
             readBool(metadata, logger, SPOTLIGHT_ENABLE, options.isEnableSpotlight()));
 

sentry-android-core/src/test/java/io/sentry/android/core/ManifestMetadataReaderTest.kt

@@ -2461,4 +2461,54 @@ class ManifestMetadataReaderTest {
     // maskAllImages should also add WebView
     assertTrue(fixture.options.screenshot.maskViewClasses.contains("android.webkit.WebView"))
   }
+
+  @Test
+  fun `applyMetadata reads strictTraceContinuation and keeps default value if not found`() {
+    // Arrange
+    val context = fixture.getContext()
+
+    // Act
+    ManifestMetadataReader.applyMetadata(context, fixture.options, fixture.buildInfoProvider)
+
+    // Assert
+    assertFalse(fixture.options.isStrictTraceContinuation)
+  }
+
+  @Test
+  fun `applyMetadata reads strictTraceContinuation to options`() {
+    // Arrange
+    val bundle = bundleOf(ManifestMetadataReader.STRICT_TRACE_CONTINUATION to true)
+    val context = fixture.getContext(metaData = bundle)
+
+    // Act
+    ManifestMetadataReader.applyMetadata(context, fixture.options, fixture.buildInfoProvider)
+
+    // Assert
+    assertTrue(fixture.options.isStrictTraceContinuation)
+  }
+
+  @Test
+  fun `applyMetadata reads orgId and keeps null if not found`() {
+    // Arrange
+    val context = fixture.getContext()
+
+    // Act
+    ManifestMetadataReader.applyMetadata(context, fixture.options, fixture.buildInfoProvider)
+
+    // Assert
+    assertNull(fixture.options.orgId)
+  }
+
+  @Test
+  fun `applyMetadata reads orgId to options`() {
+    // Arrange
+    val bundle = bundleOf(ManifestMetadataReader.ORG_ID to "12345")
+    val context = fixture.getContext(metaData = bundle)
+
+    // Act
+    ManifestMetadataReader.applyMetadata(context, fixture.options, fixture.buildInfoProvider)
+
+    // Assert
+    assertEquals("12345", fixture.options.orgId)
+  }
 }

sentry-opentelemetry/sentry-opentelemetry-core/src/main/java/io/sentry/opentelemetry/OtelSentryPropagator.java

@@ -113,6 +113,14 @@ public <C> Context extract(
 
       final @Nullable String baggageString = getter.get(carrier, BaggageHeader.BAGGAGE_HEADER);
       final Baggage baggage = Baggage.fromHeader(baggageString);
+      if (!TracingUtils.shouldContinueTrace(scopes.getOptions(), baggage)) {
+        scopes
+            .getOptions()
+            .getLogger()
+            .log(
+                SentryLevel.DEBUG, "Not continuing trace due to strict org ID validation failure.");
+        return context;
+      }
       final @NotNull TraceState traceState = TraceState.getDefault();
 
       SpanContext otelSpanContext =

sentry-opentelemetry/sentry-opentelemetry-core/src/main/java/io/sentry/opentelemetry/SentryPropagator.java

@@ -16,6 +16,7 @@
 import io.sentry.SentryLevel;
 import io.sentry.SentryTraceHeader;
 import io.sentry.exception.InvalidSentryTraceHeaderException;
+import io.sentry.util.TracingUtils;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
@@ -98,6 +99,17 @@ public <C> Context extract(
     try {
       SentryTraceHeader sentryTraceHeader = new SentryTraceHeader(sentryTraceString);
 
+      final @Nullable String baggageString = getter.get(carrier, BaggageHeader.BAGGAGE_HEADER);
+      Baggage baggage = Baggage.fromHeader(baggageString);
+      if (!TracingUtils.shouldContinueTrace(scopes.getOptions(), baggage)) {
+        scopes
+            .getOptions()
+            .getLogger()
+            .log(
+                SentryLevel.DEBUG, "Not continuing trace due to strict org ID validation failure.");
+        return context;
+      }
+
       SpanContext otelSpanContext =
           SpanContext.createFromRemoteParent(
               sentryTraceHeader.getTraceId().toString(),
@@ -107,9 +119,6 @@ public <C> Context extract(
 
       @NotNull
       Context modifiedContext = context.with(SentryOtelKeys.SENTRY_TRACE_KEY, sentryTraceHeader);
-
-      final @Nullable String baggageString = getter.get(carrier, BaggageHeader.BAGGAGE_HEADER);
-      Baggage baggage = Baggage.fromHeader(baggageString);
       modifiedContext = modifiedContext.with(SentryOtelKeys.SENTRY_BAGGAGE_KEY, baggage);
 
       Span wrappedSpan = Span.wrap(otelSpanContext);

sentry-opentelemetry/sentry-opentelemetry-core/src/main/java/io/sentry/opentelemetry/SentrySampler.java

@@ -91,7 +91,8 @@ public SamplingResult shouldSample(
     final @NotNull PropagationContext propagationContext =
         sentryTraceHeader == null
             ? new PropagationContext(new SentryId(traceId), randomSpanId, null, baggage, null)
-            : PropagationContext.fromHeaders(sentryTraceHeader, baggage, randomSpanId);
+            : PropagationContext.fromHeaders(
+                sentryTraceHeader, baggage, randomSpanId, scopes.getOptions());
 
     final @NotNull TransactionContext transactionContext =
         TransactionContext.fromPropagationContext(propagationContext);

sentry-opentelemetry/sentry-opentelemetry-core/src/main/java/io/sentry/opentelemetry/SentrySpanProcessor.java

@@ -127,7 +127,10 @@ public void onStart(final @NotNull Context parentContext, final @NotNull ReadWri
                   new SentryId(traceData.getTraceId()), spanId, null, null, null)
               : TransactionContext.fromPropagationContext(
                   PropagationContext.fromHeaders(
-                      traceData.getSentryTraceHeader(), traceData.getBaggage(), spanId));
+                      traceData.getSentryTraceHeader(),
+                      traceData.getBaggage(),
+                      spanId,
+                      scopes.getOptions()));
       ;
       transactionContext.setName(transactionName);
       transactionContext.setTransactionNameSource(transactionNameSource);

sentry-opentelemetry/sentry-opentelemetry-core/src/test/kotlin/OtelSentryPropagatorTest.kt

@@ -19,6 +19,7 @@ import kotlin.test.AfterTest
 import kotlin.test.BeforeTest
 import kotlin.test.Test
 import kotlin.test.assertEquals
+import kotlin.test.assertFalse
 import kotlin.test.assertNotNull
 import kotlin.test.assertNull
 import kotlin.test.assertSame
@@ -38,6 +39,8 @@ class OtelSentryPropagatorTest {
   @AfterTest
   fun cleanup() {
     spanStorage.clear()
+    Sentry.close()
+    Context.root().makeCurrent()
   }
 
   @Test
@@ -69,6 +72,26 @@ class OtelSentryPropagatorTest {
     assertSame(scopeInContext, scopes)
   }
 
+  @Test
+  fun `ignores incoming headers when strict continuation rejects org id`() {
+    Sentry.init { options ->
+      options.dsn = "https://key@o2.ingest.sentry.io/123"
+      options.isStrictTraceContinuation = true
+    }
+    val propagator = OtelSentryPropagator()
+    val carrier: Map<String, String> =
+      mapOf(
+        "sentry-trace" to "f9118105af4a2d42b4124532cd1065ff-424cffc8f94feeee-1",
+        "baggage" to "sentry-trace_id=f9118105af4a2d42b4124532cd1065ff,sentry-org_id=1",
+      )
+
+    val newContext = propagator.extract(Context.root(), carrier, MapGetter())
+
+    assertFalse(Span.fromContext(newContext).spanContext.isValid)
+    assertNull(newContext.get(SENTRY_TRACE_KEY))
+    assertNull(newContext.get(SENTRY_BAGGAGE_KEY))
+  }
+
   @Test
   fun `uses incoming headers`() {
     val propagator = OtelSentryPropagator()

sentry-opentelemetry/sentry-opentelemetry-core/src/test/kotlin/SentryPropagatorTest.kt

@@ -0,0 +1,48 @@
+package io.sentry.opentelemetry
+
+import io.opentelemetry.api.trace.Span
+import io.opentelemetry.context.Context
+import io.sentry.Sentry
+import io.sentry.opentelemetry.SentryOtelKeys.SENTRY_BAGGAGE_KEY
+import io.sentry.opentelemetry.SentryOtelKeys.SENTRY_TRACE_KEY
+import kotlin.test.AfterTest
+import kotlin.test.BeforeTest
+import kotlin.test.Test
+import kotlin.test.assertFalse
+import kotlin.test.assertNull
+
+class SentryPropagatorTest {
+
+  @BeforeTest
+  fun setup() {
+    Sentry.init("https://key@sentry.io/proj")
+  }
+
+  @AfterTest
+  fun teardown() {
+    Sentry.close()
+    Context.root().makeCurrent()
+  }
+
+  @Suppress("DEPRECATION")
+  @Test
+  fun `ignores incoming headers when strict continuation rejects org id`() {
+    Sentry.init { options ->
+      options.dsn = "https://key@o2.ingest.sentry.io/123"
+      options.isStrictTraceContinuation = true
+    }
+
+    val propagator = SentryPropagator()
+    val carrier: Map<String, String> =
+      mapOf(
+        "sentry-trace" to "f9118105af4a2d42b4124532cd1065ff-424cffc8f94feeee-1",
+        "baggage" to "sentry-trace_id=f9118105af4a2d42b4124532cd1065ff,sentry-org_id=1",
+      )
+
+    val newContext = propagator.extract(Context.root(), carrier, MapGetter())
+
+    assertFalse(Span.fromContext(newContext).spanContext.isValid)
+    assertNull(newContext.get(SENTRY_TRACE_KEY))
+    assertNull(newContext.get(SENTRY_BAGGAGE_KEY))
+  }
+}

sentry-opentelemetry/sentry-opentelemetry-otlp/src/main/java/io/sentry/opentelemetry/otlp/OpenTelemetryOtlpPropagator.java

@@ -18,6 +18,7 @@
 import io.sentry.SentryLevel;
 import io.sentry.SentryTraceHeader;
 import io.sentry.exception.InvalidSentryTraceHeaderException;
+import io.sentry.util.TracingUtils;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
@@ -87,6 +88,16 @@ public <C> Context extract(
       SentryTraceHeader sentryTraceHeader = new SentryTraceHeader(sentryTraceString);
 
       final @Nullable String baggageString = getter.get(carrier, BaggageHeader.BAGGAGE_HEADER);
+      final @Nullable Baggage baggage =
+          baggageString == null ? null : Baggage.fromHeader(baggageString);
+      if (!TracingUtils.shouldContinueTrace(scopes.getOptions(), baggage)) {
+        scopes
+            .getOptions()
+            .getLogger()
+            .log(
+                SentryLevel.DEBUG, "Not continuing trace due to strict org ID validation failure.");
+        return context;
+      }
       final @NotNull TraceState traceState = TraceState.getDefault();
 
       final @NotNull TraceFlags traceFlags =
@@ -104,9 +115,8 @@ public <C> Context extract(
       Span wrappedSpan = Span.wrap(otelSpanContext);
 
       @NotNull Context modifiedContext = context.with(wrappedSpan);
-      if (baggageString != null) {
-        modifiedContext =
-            modifiedContext.with(SENTRY_BAGGAGE_KEY, Baggage.fromHeader(baggageString));
+      if (baggage != null) {
+        modifiedContext = modifiedContext.with(SENTRY_BAGGAGE_KEY, baggage);
       }
 
       scopes