diff --git a/lib/analyze-action.js b/lib/analyze-action.js
index 182230563..3e29b6c2c 100644
--- a/lib/analyze-action.js
+++ b/lib/analyze-action.js
@@ -94111,7 +94111,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       action_ref: actionRef,
       action_started_at: actionStartedAt.toISOString(),
       action_version: getActionVersion(),
-      analysis_kinds: config?.analysisKinds.join(","),
+      analysis_kinds: config?.analysisKinds?.join(","),
       analysis_key,
       build_mode: config?.buildMode,
       commit_oid: commitOid,
@@ -94134,7 +94134,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       logger.warning(`Could not determine the workflow event name: ${e}.`);
     }
     if (config) {
-      statusReport.languages = config.languages.join(",");
+      statusReport.languages = config.languages?.join(",");
     }
     if (diskInfo) {
       statusReport.runner_available_disk_space_bytes = diskInfo.numAvailableBytes;
diff --git a/lib/autobuild-action.js b/lib/autobuild-action.js
index acdcdd44d..376db2e4d 100644
--- a/lib/autobuild-action.js
+++ b/lib/autobuild-action.js
@@ -79812,7 +79812,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       action_ref: actionRef,
       action_started_at: actionStartedAt.toISOString(),
       action_version: getActionVersion(),
-      analysis_kinds: config?.analysisKinds.join(","),
+      analysis_kinds: config?.analysisKinds?.join(","),
       analysis_key,
       build_mode: config?.buildMode,
       commit_oid: commitOid,
@@ -79835,7 +79835,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       logger.warning(`Could not determine the workflow event name: ${e}.`);
     }
     if (config) {
-      statusReport.languages = config.languages.join(",");
+      statusReport.languages = config.languages?.join(",");
     }
     if (diskInfo) {
       statusReport.runner_available_disk_space_bytes = diskInfo.numAvailableBytes;
diff --git a/lib/init-action-post.js b/lib/init-action-post.js
index 3795e4c5d..9f480cf7a 100644
--- a/lib/init-action-post.js
+++ b/lib/init-action-post.js
@@ -131587,7 +131587,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       action_ref: actionRef,
       action_started_at: actionStartedAt.toISOString(),
       action_version: getActionVersion(),
-      analysis_kinds: config?.analysisKinds.join(","),
+      analysis_kinds: config?.analysisKinds?.join(","),
       analysis_key,
       build_mode: config?.buildMode,
       commit_oid: commitOid,
@@ -131610,7 +131610,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       logger.warning(`Could not determine the workflow event name: ${e}.`);
     }
     if (config) {
-      statusReport.languages = config.languages.join(",");
+      statusReport.languages = config.languages?.join(",");
     }
     if (diskInfo) {
       statusReport.runner_available_disk_space_bytes = diskInfo.numAvailableBytes;
diff --git a/lib/init-action.js b/lib/init-action.js
index cc78a9e14..5c1a810de 100644
--- a/lib/init-action.js
+++ b/lib/init-action.js
@@ -90265,7 +90265,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       action_ref: actionRef,
       action_started_at: actionStartedAt.toISOString(),
       action_version: getActionVersion(),
-      analysis_kinds: config?.analysisKinds.join(","),
+      analysis_kinds: config?.analysisKinds?.join(","),
       analysis_key,
       build_mode: config?.buildMode,
       commit_oid: commitOid,
@@ -90288,7 +90288,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       logger.warning(`Could not determine the workflow event name: ${e}.`);
     }
     if (config) {
-      statusReport.languages = config.languages.join(",");
+      statusReport.languages = config.languages?.join(",");
     }
     if (diskInfo) {
       statusReport.runner_available_disk_space_bytes = diskInfo.numAvailableBytes;
diff --git a/lib/resolve-environment-action.js b/lib/resolve-environment-action.js
index af32f15fa..d3dcf7a8e 100644
--- a/lib/resolve-environment-action.js
+++ b/lib/resolve-environment-action.js
@@ -79439,7 +79439,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       action_ref: actionRef,
       action_started_at: actionStartedAt.toISOString(),
       action_version: getActionVersion(),
-      analysis_kinds: config?.analysisKinds.join(","),
+      analysis_kinds: config?.analysisKinds?.join(","),
       analysis_key,
       build_mode: config?.buildMode,
       commit_oid: commitOid,
@@ -79462,7 +79462,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       logger.warning(`Could not determine the workflow event name: ${e}.`);
     }
     if (config) {
-      statusReport.languages = config.languages.join(",");
+      statusReport.languages = config.languages?.join(",");
     }
     if (diskInfo) {
       statusReport.runner_available_disk_space_bytes = diskInfo.numAvailableBytes;
diff --git a/lib/start-proxy-action.js b/lib/start-proxy-action.js
index a315dd257..8eb317706 100644
--- a/lib/start-proxy-action.js
+++ b/lib/start-proxy-action.js
@@ -95589,7 +95589,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       action_ref: actionRef,
       action_started_at: actionStartedAt.toISOString(),
       action_version: getActionVersion(),
-      analysis_kinds: config?.analysisKinds.join(","),
+      analysis_kinds: config?.analysisKinds?.join(","),
       analysis_key,
       build_mode: config?.buildMode,
       commit_oid: commitOid,
@@ -95612,7 +95612,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       logger.warning(`Could not determine the workflow event name: ${e}.`);
     }
     if (config) {
-      statusReport.languages = config.languages.join(",");
+      statusReport.languages = config.languages?.join(",");
     }
     if (diskInfo) {
       statusReport.runner_available_disk_space_bytes = diskInfo.numAvailableBytes;
diff --git a/lib/upload-sarif-action.js b/lib/upload-sarif-action.js
index 77c8baf84..c9888f096 100644
--- a/lib/upload-sarif-action.js
+++ b/lib/upload-sarif-action.js
@@ -89856,7 +89856,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       action_ref: actionRef,
       action_started_at: actionStartedAt.toISOString(),
       action_version: getActionVersion(),
-      analysis_kinds: config?.analysisKinds.join(","),
+      analysis_kinds: config?.analysisKinds?.join(","),
       analysis_key,
       build_mode: config?.buildMode,
       commit_oid: commitOid,
@@ -89879,7 +89879,7 @@ async function createStatusReportBase(actionName, status, actionStartedAt, confi
       logger.warning(`Could not determine the workflow event name: ${e}.`);
     }
     if (config) {
-      statusReport.languages = config.languages.join(",");
+      statusReport.languages = config.languages?.join(",");
     }
     if (diskInfo) {
       statusReport.runner_available_disk_space_bytes = diskInfo.numAvailableBytes;
diff --git a/src/status-report.test.ts b/src/status-report.test.ts
index b535ef212..8421dccee 100644
--- a/src/status-report.test.ts
+++ b/src/status-report.test.ts
@@ -92,6 +92,49 @@ test("createStatusReportBase", async (t) => {
   });
 });
 
+test("createStatusReportBase - empty configuration", async (t) => {
+  await withTmpDir(async (tmpDir: string) => {
+    setupEnvironmentAndStub(tmpDir);
+
+    const statusReport = await createStatusReportBase(
+      ActionName.StartProxy,
+      "success",
+      new Date("May 19, 2023 05:19:00"),
+      {},
+      { numAvailableBytes: 100, numTotalBytes: 500 },
+      getRunnerLogger(false),
+    );
+
+    if (t.truthy(statusReport)) {
+      t.is(statusReport.action_name, ActionName.StartProxy);
+      t.is(statusReport.status, "success");
+    }
+  });
+});
+
+test("createStatusReportBase - partial configuration", async (t) => {
+  await withTmpDir(async (tmpDir: string) => {
+    setupEnvironmentAndStub(tmpDir);
+
+    const statusReport = await createStatusReportBase(
+      ActionName.StartProxy,
+      "success",
+      new Date("May 19, 2023 05:19:00"),
+      {
+        languages: ["go"],
+      },
+      { numAvailableBytes: 100, numTotalBytes: 500 },
+      getRunnerLogger(false),
+    );
+
+    if (t.truthy(statusReport)) {
+      t.is(statusReport.action_name, ActionName.StartProxy);
+      t.is(statusReport.status, "success");
+      t.is(statusReport.languages, "go");
+    }
+  });
+});
+
 test("createStatusReportBase_firstParty", async (t) => {
   await withTmpDir(async (tmpDir: string) => {
     setupEnvironmentAndStub(tmpDir);
diff --git a/src/status-report.ts b/src/status-report.ts
index 9bfd14677..46b16a5ef 100644
--- a/src/status-report.ts
+++ b/src/status-report.ts
@@ -260,7 +260,7 @@ export async function createStatusReportBase(
   actionName: ActionName,
   status: ActionStatus,
   actionStartedAt: Date,
-  config: Config | undefined,
+  config: Partial<Config> | undefined,
   diskInfo: DiskUsage | undefined,
   logger: Logger,
   cause?: string,
@@ -299,7 +299,7 @@ export async function createStatusReportBase(
       action_ref: actionRef,
       action_started_at: actionStartedAt.toISOString(),
       action_version: getActionVersion(),
-      analysis_kinds: config?.analysisKinds.join(","),
+      analysis_kinds: config?.analysisKinds?.join(","),
       analysis_key,
       build_mode: config?.buildMode,
       commit_oid: commitOid,
@@ -324,7 +324,7 @@ export async function createStatusReportBase(
     }
 
     if (config) {
-      statusReport.languages = config.languages.join(",");
+      statusReport.languages = config.languages?.join(",");
     }
 
     if (diskInfo) {