fix: populate Default attributes on structured logs from current scope

src/Sentry/Internal/DefaultSentryStructuredLogger.cs

@@ -76,7 +76,7 @@ private protected override void CaptureLog(SentryLogLevel level, string template
         }
 
         var scope = _hub.GetScope();
-        log.SetDefaultAttributes(_options, scope?.Sdk ?? SdkVersion.Instance);
+        log.SetDefaultAttributes(_options, scope?.Sdk ?? SdkVersion.Instance, scope);
 
         CaptureLog(log);
     }

src/Sentry/SentryLog.cs

@@ -172,7 +172,7 @@ internal void SetAttribute(string key, int value)
         _attributes[key] = new SentryAttribute(value, "integer");
     }
 
-    internal void SetDefaultAttributes(SentryOptions options, SdkVersion sdk)
+    internal void SetDefaultAttributes(SentryOptions options, SdkVersion sdk, Scope? scope = null)
     {
         var environment = options.SettingLocator.GetEnvironment();
         SetAttribute("sentry.environment", environment);
@@ -191,6 +191,22 @@ internal void SetDefaultAttributes(SentryOptions options, SdkVersion sdk)
         {
             SetAttribute("sentry.sdk.version", version);
         }
+
+        if (scope?.User is { } user)
+        {
+            if (user.Id is { } userId)
+            {
+                SetAttribute("user.id", userId);
+            }
+            if (user.Username is { } username)
+            {
+                SetAttribute("user.name", username);
+            }
+            if (user.Email is { } email)
+            {
+                SetAttribute("user.email", email);
+            }
+        }
     }
 
     internal void SetOrigin(string origin)

test/Sentry.Tests/SentryStructuredLoggerTests.cs

@@ -245,6 +245,58 @@ public void Dispose_BeforeLog_DoesNotCaptureEnvelope()
         entry.Args.Should().BeEquivalentTo([nameof(SentryLog)]);
     }
 
+    [Fact]
+    public void Log_WithScopeUser_SetsUserAttributes()
+    {
+        var scope = new Scope();
+        scope.User = new SentryUser { Id = "user-id", Username = "user-name", Email = "user@example.com" };
+        _fixture.Hub.SubstituteConfigureScope(scope);
+
+        SentryLog capturedLog = null!;
+        _fixture.Options.EnableLogs = true;
+        _fixture.Options.SetBeforeSendLog((SentryLog log) =>
+        {
+            capturedLog = log;
+            return log;
+        });
+        var logger = _fixture.GetSut();
+
+        logger.LogInfo("A message");
+        logger.Flush();
+
+        capturedLog.Should().NotBeNull();
+        capturedLog.TryGetAttribute("user.id", out string? userId).Should().BeTrue();
+        userId.Should().Be("user-id");
+        capturedLog.TryGetAttribute("user.name", out string? userName).Should().BeTrue();
+        userName.Should().Be("user-name");
+        capturedLog.TryGetAttribute("user.email", out string? userEmail).Should().BeTrue();
+        userEmail.Should().Be("user@example.com");
+    }
+
+    [Fact]
+    public void Log_WithoutScopeUser_DoesNotSetUserAttributes()
+    {
+        var scope = new Scope();
+        _fixture.Hub.SubstituteConfigureScope(scope);
+
+        SentryLog capturedLog = null!;
+        _fixture.Options.EnableLogs = true;
+        _fixture.Options.SetBeforeSendLog((SentryLog log) =>
+        {
+            capturedLog = log;
+            return log;
+        });
+        var logger = _fixture.GetSut();
+
+        logger.LogInfo("A message");
+        logger.Flush();
+
+        capturedLog.Should().NotBeNull();
+        capturedLog.TryGetAttribute("user.id", out object? _).Should().BeFalse();
+        capturedLog.TryGetAttribute("user.name", out object? _).Should().BeFalse();
+        capturedLog.TryGetAttribute("user.email", out object? _).Should().BeFalse();
+    }
+
     private static void ConfigureLog(SentryLog log)
     {
         log.SetAttribute("attribute-key", "attribute-value");