diff --git a/CHANGELOG.md b/CHANGELOG.md
index 253485dd4f..0589f45cd6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ See the [releases page](https://github.com/github/codeql-action/releases) for th
 
 ## [UNRELEASED]
 
-No user facing changes.
+- Update default CodeQL bundle version to 2.23.8. [#3354](https://github.com/github/codeql-action/pull/3354)
 
 ## 4.31.7 - 05 Dec 2025
 
diff --git a/lib/analyze-action.js b/lib/analyze-action.js
index 48520792c9..7ba381fc20 100644
--- a/lib/analyze-action.js
+++ b/lib/analyze-action.js
@@ -88211,8 +88211,8 @@ var path4 = __toESM(require("path"));
 var semver4 = __toESM(require_semver2());
 
 // src/defaults.json
-var bundleVersion = "codeql-bundle-v2.23.7";
-var cliVersion = "2.23.7";
+var bundleVersion = "codeql-bundle-v2.23.8";
+var cliVersion = "2.23.8";
 
 // src/overlay-database-utils.ts
 var fs3 = __toESM(require("fs"));
diff --git a/lib/autobuild-action.js b/lib/autobuild-action.js
index c7b2d59091..36f094bde6 100644
--- a/lib/autobuild-action.js
+++ b/lib/autobuild-action.js
@@ -83701,8 +83701,8 @@ var path3 = __toESM(require("path"));
 var semver4 = __toESM(require_semver2());
 
 // src/defaults.json
-var bundleVersion = "codeql-bundle-v2.23.7";
-var cliVersion = "2.23.7";
+var bundleVersion = "codeql-bundle-v2.23.8";
+var cliVersion = "2.23.8";
 
 // src/overlay-database-utils.ts
 var fs2 = __toESM(require("fs"));
diff --git a/lib/defaults.json b/lib/defaults.json
index 04929fab3e..6f3dc42bf8 100644
--- a/lib/defaults.json
+++ b/lib/defaults.json
@@ -1,6 +1,6 @@
 {
-  "bundleVersion": "codeql-bundle-v2.23.7",
-  "cliVersion": "2.23.7",
-  "priorBundleVersion": "codeql-bundle-v2.23.6",
-  "priorCliVersion": "2.23.6"
+  "bundleVersion": "codeql-bundle-v2.23.8",
+  "cliVersion": "2.23.8",
+  "priorBundleVersion": "codeql-bundle-v2.23.7",
+  "priorCliVersion": "2.23.7"
 }
diff --git a/lib/init-action-post.js b/lib/init-action-post.js
index 6699c08cab..04c9c69fef 100644
--- a/lib/init-action-post.js
+++ b/lib/init-action-post.js
@@ -123084,8 +123084,8 @@ var path4 = __toESM(require("path"));
 var semver4 = __toESM(require_semver2());
 
 // src/defaults.json
-var bundleVersion = "codeql-bundle-v2.23.7";
-var cliVersion = "2.23.7";
+var bundleVersion = "codeql-bundle-v2.23.8";
+var cliVersion = "2.23.8";
 
 // src/overlay-database-utils.ts
 var fs3 = __toESM(require("fs"));
diff --git a/lib/init-action.js b/lib/init-action.js
index 77524b00ab..d1beb6611d 100644
--- a/lib/init-action.js
+++ b/lib/init-action.js
@@ -85635,8 +85635,8 @@ var path5 = __toESM(require("path"));
 var semver4 = __toESM(require_semver2());
 
 // src/defaults.json
-var bundleVersion = "codeql-bundle-v2.23.7";
-var cliVersion = "2.23.7";
+var bundleVersion = "codeql-bundle-v2.23.8";
+var cliVersion = "2.23.8";
 
 // src/overlay-database-utils.ts
 var fs3 = __toESM(require("fs"));
diff --git a/lib/setup-codeql-action.js b/lib/setup-codeql-action.js
index 4b4c28abca..49ab3bf481 100644
--- a/lib/setup-codeql-action.js
+++ b/lib/setup-codeql-action.js
@@ -83589,8 +83589,8 @@ var path4 = __toESM(require("path"));
 var semver3 = __toESM(require_semver2());
 
 // src/defaults.json
-var bundleVersion = "codeql-bundle-v2.23.7";
-var cliVersion = "2.23.7";
+var bundleVersion = "codeql-bundle-v2.23.8";
+var cliVersion = "2.23.8";
 
 // src/overlay-database-utils.ts
 var fs3 = __toESM(require("fs"));
diff --git a/lib/start-proxy-action.js b/lib/start-proxy-action.js
index 16f308b6a7..e70a7412bc 100644
--- a/lib/start-proxy-action.js
+++ b/lib/start-proxy-action.js
@@ -99720,8 +99720,8 @@ function getActionsLogger() {
 var core7 = __toESM(require_core());
 
 // src/defaults.json
-var bundleVersion = "codeql-bundle-v2.23.7";
-var cliVersion = "2.23.7";
+var bundleVersion = "codeql-bundle-v2.23.8";
+var cliVersion = "2.23.8";
 
 // src/languages.ts
 var KnownLanguage = /* @__PURE__ */ ((KnownLanguage2) => {
diff --git a/lib/upload-lib.js b/lib/upload-lib.js
index 3ee72bb5cf..245288bc2f 100644
--- a/lib/upload-lib.js
+++ b/lib/upload-lib.js
@@ -86724,8 +86724,8 @@ var path4 = __toESM(require("path"));
 var semver4 = __toESM(require_semver2());
 
 // src/defaults.json
-var bundleVersion = "codeql-bundle-v2.23.7";
-var cliVersion = "2.23.7";
+var bundleVersion = "codeql-bundle-v2.23.8";
+var cliVersion = "2.23.8";
 
 // src/overlay-database-utils.ts
 var fs3 = __toESM(require("fs"));
diff --git a/lib/upload-sarif-action.js b/lib/upload-sarif-action.js
index 2efce87979..fd314e6acc 100644
--- a/lib/upload-sarif-action.js
+++ b/lib/upload-sarif-action.js
@@ -86505,8 +86505,8 @@ var path4 = __toESM(require("path"));
 var semver3 = __toESM(require_semver2());
 
 // src/defaults.json
-var bundleVersion = "codeql-bundle-v2.23.7";
-var cliVersion = "2.23.7";
+var bundleVersion = "codeql-bundle-v2.23.8";
+var cliVersion = "2.23.8";
 
 // src/overlay-database-utils.ts
 var fs3 = __toESM(require("fs"));
diff --git a/src/defaults.json b/src/defaults.json
index 04929fab3e..6f3dc42bf8 100644
--- a/src/defaults.json
+++ b/src/defaults.json
@@ -1,6 +1,6 @@
 {
-  "bundleVersion": "codeql-bundle-v2.23.7",
-  "cliVersion": "2.23.7",
-  "priorBundleVersion": "codeql-bundle-v2.23.6",
-  "priorCliVersion": "2.23.6"
+  "bundleVersion": "codeql-bundle-v2.23.8",
+  "cliVersion": "2.23.8",
+  "priorBundleVersion": "codeql-bundle-v2.23.7",
+  "priorCliVersion": "2.23.7"
 }