diff --git a/apps/editor/package.json b/apps/editor/package.json
index 93b992dbf..eec786c04 100644
--- a/apps/editor/package.json
+++ b/apps/editor/package.json
@@ -80,7 +80,7 @@
     "cross-env": "^6.0.3"
   },
   "dependencies": {
-    "dompurify": "^3.3.3",
+    "dompurify": "^3.4.0",
     "prosemirror-commands": "^1.1.9",
     "prosemirror-history": "^1.1.3",
     "prosemirror-inputrules": "^1.1.3",
diff --git a/package-lock.json b/package-lock.json
index 0f414ba46..9e610bd57 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -81,7 +81,7 @@
       "version": "3.4.1",
       "license": "MIT",
       "dependencies": {
-        "dompurify": "^3.3.3",
+        "dompurify": "^3.4.0",
         "prosemirror-commands": "^1.1.9",
         "prosemirror-history": "^1.1.3",
         "prosemirror-inputrules": "^1.1.3",
@@ -10602,10 +10602,9 @@
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     },
     "node_modules/dompurify": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.3.3.tgz",
-      "integrity": "sha512-Oj6pzI2+RqBfFG+qOaOLbFXLQ90ARpcGG6UePL82bJLtdsa6CYJD7nmiU8MW9nQNOtCHV3lZ/Bzq1X0QYbBZCA==",
-      "license": "(MPL-2.0 OR Apache-2.0)",
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.0.tgz",
+      "integrity": "sha512-nolgK9JcaUXMSmW+j1yaSvaEaoXYHwWyGJlkoCTghc97KgGDDSnpoU/PlEnw63Ah+TGKFOyY+X5LnxaWbCSfXg==",
       "optionalDependencies": {
         "@types/trusted-types": "^2.0.7"
       }
@@ -17274,6 +17273,17 @@
         }
       }
     },
+    "node_modules/lerna/node_modules/@types/node": {
+      "version": "25.6.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
+      "integrity": "sha512-+qIYRKdNYJwY3vRCZMdJbPLJAtGjQBudzZzdzwQYkEPQd+PJGixUL5QfvCLDaULoLv+RhT3LDkwEfKaAkgSmNQ==",
+      "dev": true,
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "undici-types": "~7.19.0"
+      }
+    },
     "node_modules/lerna/node_modules/ansi-styles": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
@@ -26322,6 +26332,14 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/undici-types": {
+      "version": "7.19.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.19.2.tgz",
+      "integrity": "sha512-qYVnV5OEm2AW8cJMCpdV20CDyaN3g0AjDlOGf1OW4iaDEx8MwdtChUp4zu4H0VP3nDRF/8RKWH+IPp9uW0YGZg==",
+      "dev": true,
+      "optional": true,
+      "peer": true
+    },
     "node_modules/unicode-canonical-property-names-ecmascript": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-2.0.0.tgz",
@@ -29314,7 +29332,7 @@
       "requires": {
         "@toast-ui/release-notes": "^2.0.1",
         "cross-env": "^6.0.3",
-        "dompurify": "^3.3.3",
+        "dompurify": "3.4.0",
         "prosemirror-commands": "^1.1.9",
         "prosemirror-history": "^1.1.3",
         "prosemirror-inputrules": "^1.1.3",
@@ -35841,9 +35859,9 @@
       }
     },
     "dompurify": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.3.3.tgz",
-      "integrity": "sha512-Oj6pzI2+RqBfFG+qOaOLbFXLQ90ARpcGG6UePL82bJLtdsa6CYJD7nmiU8MW9nQNOtCHV3lZ/Bzq1X0QYbBZCA==",
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.0.tgz",
+      "integrity": "sha512-nolgK9JcaUXMSmW+j1yaSvaEaoXYHwWyGJlkoCTghc97KgGDDSnpoU/PlEnw63Ah+TGKFOyY+X5LnxaWbCSfXg==",
       "requires": {
         "@types/trusted-types": "^2.0.7"
       }
@@ -40677,6 +40695,17 @@
           "dev": true,
           "requires": {}
         },
+        "@types/node": {
+          "version": "25.6.0",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
+          "integrity": "sha512-+qIYRKdNYJwY3vRCZMdJbPLJAtGjQBudzZzdzwQYkEPQd+PJGixUL5QfvCLDaULoLv+RhT3LDkwEfKaAkgSmNQ==",
+          "dev": true,
+          "optional": true,
+          "peer": true,
+          "requires": {
+            "undici-types": "~7.19.0"
+          }
+        },
         "ansi-styles": {
           "version": "4.3.0",
           "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
@@ -47313,6 +47342,14 @@
         "which-boxed-primitive": "^1.0.2"
       }
     },
+    "undici-types": {
+      "version": "7.19.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.19.2.tgz",
+      "integrity": "sha512-qYVnV5OEm2AW8cJMCpdV20CDyaN3g0AjDlOGf1OW4iaDEx8MwdtChUp4zu4H0VP3nDRF/8RKWH+IPp9uW0YGZg==",
+      "dev": true,
+      "optional": true,
+      "peer": true
+    },
     "unicode-canonical-property-names-ecmascript": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-2.0.0.tgz",