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Medium severity5.4OSV Advisory· Published Jun 26, 2024· Updated Apr 15, 2026

CVE-2024-38527

CVE-2024-38527

Description

ZenUML is JavaScript-based diagramming tool that requires no server, using Markdown-inspired text definitions and a renderer to create and modify sequence diagrams. Markdown-based comments in the ZenUML diagram syntax are susceptible to Cross-site Scripting (XSS). The comment feature allows the user to attach small notes for reference. This feature allows the user to enter in their comment in markdown comment, allowing them to use common markdown features, such as ** for bolded text. However, the markdown text is currently not sanitized before rendering, allowing an attacker to enter a malicious payload for the comment which leads to XSS. This puts existing applications that use ZenUML unsandboxed at risk of arbitrary JavaScript execution when rendering user-controlled diagrams. This vulnerability was patched in version 3.23.25,

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
@zenuml/corenpm
< 3.23.253.23.25

Affected products

1

Patches

1
ad7545b33f5f

Fixed an XSS vulnerability.

https://github.com/mermaid-js/zenuml-coreMrCoderJun 26, 2024via ghsa
commit
3 files changed · +36 −23
  • package.json+1 −0 modified
    @@ -49,6 +49,7 @@
     "antlr4": "~4.11.0",
     "color-string": "^1.5.5",
     "dom-to-image-more": "^2.13.0",
+    "dompurify": "^3.1.5",
     "file-saver": "^2.0.5",
     "highlight.js": "^10.7.3",
     "html-to-image": "^1.11.3",
  • pnpm-lock.yaml+30 −20 modified
    @@ -28,6 +28,9 @@ dependencies:
   dom-to-image-more:
     specifier: ^2.13.0
     version: 2.13.0
+  dompurify:
+    specifier: ^3.1.5
+    version: 3.1.5
   file-saver:
     specifier: ^2.0.5
     version: 2.0.5
@@ -80,7 +83,7 @@ devDependencies:
     version: 4.14.191
   "@types/node":
     specifier: latest
-    version: 20.13.0
+    version: 20.14.9
   "@typescript-eslint/eslint-plugin":
     specifier: ^6.7.4
     version: 6.7.4(@typescript-eslint/parser@6.7.4)(eslint@8.30.0)(typescript@4.9.4)
@@ -161,13 +164,13 @@ devDependencies:
     version: 3.1.0(webpack@5.91.0)
   ts-node:
     specifier: ^10.9.1
-    version: 10.9.1(@types/node@20.13.0)(typescript@4.9.4)
+    version: 10.9.1(@types/node@20.14.9)(typescript@4.9.4)
   typescript:
     specifier: ^4.9.4
     version: 4.9.4
   vite:
     specifier: ^3.2.10
-    version: 3.2.10(@types/node@20.13.0)(less@4.1.3)(sass@1.57.0)
+    version: 3.2.10(@types/node@20.14.9)(less@4.1.3)(sass@1.57.0)
   vite-plugin-css-injected-by-js:
     specifier: ^2.2.0
     version: 2.2.0(vite@3.2.10)
@@ -2962,10 +2965,10 @@ packages:
       }
     dev: true
 
-  /@types/node@20.13.0:
+  /@types/node@20.14.9:
     resolution:
       {
-        integrity: sha512-FM6AOb3khNkNIXPnHFDYaHerSv8uN22C91z098AnGccVu+Pcdhi+pNUFDi0iLmPIsVE0JBD0KVS7mzUYt4nRzQ==,
+        integrity: sha512-06OCtnTXtWOZBJlRApleWndH4JsRVs1pDCc8dLSQp+7PpUpX3ePdHyeNSFTeSe7FtKyQkrlPvHwJOW3SLd8Oyg==,
       }
     dependencies:
       undici-types: 5.26.5
@@ -3007,7 +3010,7 @@ packages:
       }
     requiresBuild: true
     dependencies:
-      "@types/node": 20.13.0
+      "@types/node": 20.14.9
     dev: true
     optional: true
 
@@ -3176,7 +3179,7 @@ packages:
       vite: ^4.0.0
       vue: ^3.2.25
     dependencies:
-      vite: 3.2.10(@types/node@20.13.0)(less@4.1.3)(sass@1.57.0)
+      vite: 3.2.10(@types/node@20.14.9)(less@4.1.3)(sass@1.57.0)
       vue: 3.4.27(typescript@4.9.4)
     dev: true
 
@@ -5085,6 +5088,13 @@ packages:
       domelementtype: 2.3.0
     dev: true
 
+  /dompurify@3.1.5:
+    resolution:
+      {
+        integrity: sha512-lwG+n5h8QNpxtyrJW/gJWckL+1/DQiYMX8f7t8Z2AZTPw1esVrqjI63i7Zc2Gz0aKzLVMYC1V1PL/ky+aY/NgA==,
+      }
+    dev: false
+
   /domutils@3.1.0:
     resolution:
       {
@@ -6933,7 +6943,7 @@ packages:
       }
     engines: { node: ">= 10.13.0" }
     dependencies:
-      "@types/node": 20.13.0
+      "@types/node": 20.14.9
       merge-stream: 2.0.0
       supports-color: 7.2.0
     dev: true
@@ -6945,7 +6955,7 @@ packages:
       }
     engines: { node: ">= 10.13.0" }
     dependencies:
-      "@types/node": 20.13.0
+      "@types/node": 20.14.9
       merge-stream: 2.0.0
       supports-color: 8.1.1
     dev: true
@@ -8365,7 +8375,7 @@ packages:
     dependencies:
       lilconfig: 2.0.6
       postcss: 8.4.31
-      ts-node: 10.9.1(@types/node@20.13.0)(typescript@4.9.4)
+      ts-node: 10.9.1(@types/node@20.14.9)(typescript@4.9.4)
       yaml: 1.10.2
     dev: false
 
@@ -9731,7 +9741,7 @@ packages:
       typescript: 4.9.4
     dev: true
 
-  /ts-node@10.9.1(@types/node@20.13.0)(typescript@4.9.4):
+  /ts-node@10.9.1(@types/node@20.14.9)(typescript@4.9.4):
     resolution:
       {
         integrity: sha512-NtVysVPkxxrwFGUUxGYhfux8k78pQB3JqYBXlLRZgdGUqTO5wU/UyHop5p70iEbGhB7q5KmiZiU0Y3KlJrScEw==,
@@ -9753,7 +9763,7 @@ packages:
       "@tsconfig/node12": 1.0.11
       "@tsconfig/node14": 1.0.3
       "@tsconfig/node16": 1.0.3
-      "@types/node": 20.13.0
+      "@types/node": 20.14.9
       acorn: 8.8.1
       acorn-walk: 8.2.0
       arg: 4.1.3
@@ -10063,7 +10073,7 @@ packages:
       extsprintf: 1.3.0
     dev: true
 
-  /vite-node@0.26.1(@types/node@20.13.0)(less@4.1.3)(sass@1.57.0):
+  /vite-node@0.26.1(@types/node@20.14.9)(less@4.1.3)(sass@1.57.0):
     resolution:
       {
         integrity: sha512-5FJSKZZJz48zFRKHE55WyevZe61hLMQEsqGn+ungfd60kxEztFybZ3yG9ToGFtOWNCCy7Vn5EVuXD8bdeHOSdw==,
@@ -10076,7 +10086,7 @@ packages:
       pathe: 0.2.0
       source-map: 0.6.1
       source-map-support: 0.5.21
-      vite: 3.2.10(@types/node@20.13.0)(less@4.1.3)(sass@1.57.0)
+      vite: 3.2.10(@types/node@20.14.9)(less@4.1.3)(sass@1.57.0)
     transitivePeerDependencies:
       - "@types/node"
       - less
@@ -10095,7 +10105,7 @@ packages:
     peerDependencies:
       vite: ">2.0.0-0"
     dependencies:
-      vite: 3.2.10(@types/node@20.13.0)(less@4.1.3)(sass@1.57.0)
+      vite: 3.2.10(@types/node@20.14.9)(less@4.1.3)(sass@1.57.0)
     dev: true
 
   /vite-svg-loader@4.0.0:
@@ -10108,7 +10118,7 @@ packages:
       svgo: 3.0.2
     dev: true
 
-  /vite@3.2.10(@types/node@20.13.0)(less@4.1.3)(sass@1.57.0):
+  /vite@3.2.10(@types/node@20.14.9)(less@4.1.3)(sass@1.57.0):
     resolution:
       {
         integrity: sha512-Dx3olBo/ODNiMVk/cA5Yft9Ws+snLOXrhLtrI3F4XLt4syz2Yg8fayZMWScPKoz12v5BUv7VEmQHnsfpY80fYw==,
@@ -10136,7 +10146,7 @@ packages:
       terser:
         optional: true
     dependencies:
-      "@types/node": 20.13.0
+      "@types/node": 20.14.9
       esbuild: 0.15.18
       less: 4.1.3
       postcss: 8.4.31
@@ -10174,7 +10184,7 @@ packages:
     dependencies:
       "@types/chai": 4.3.4
       "@types/chai-subset": 1.3.3
-      "@types/node": 20.13.0
+      "@types/node": 20.14.9
       acorn: 8.8.1
       acorn-walk: 8.2.0
       chai: 4.3.7
@@ -10186,8 +10196,8 @@ packages:
       tinybench: 2.3.1
       tinypool: 0.3.0
       tinyspy: 1.0.2
-      vite: 3.2.10(@types/node@20.13.0)(less@4.1.3)(sass@1.57.0)
-      vite-node: 0.26.1(@types/node@20.13.0)(less@4.1.3)(sass@1.57.0)
+      vite: 3.2.10(@types/node@20.14.9)(less@4.1.3)(sass@1.57.0)
+      vite-node: 0.26.1(@types/node@20.14.9)(less@4.1.3)(sass@1.57.0)
     transitivePeerDependencies:
       - less
       - sass
  • src/components/DiagramFrame/SeqDiagram/MessageLayer/Block/Statement/Comment/Comment.vue+5 −3 modified
    @@ -8,6 +8,8 @@
 
 <script type="text/babel">
 import { marked } from "marked";
+import DOMPurify from "dompurify";
+
 import highlightjs from "highlight.js/lib/core";
 
 // Languages import
@@ -61,10 +63,10 @@ export default {
   props: ["comment", "commentObj"],
   computed: {
     markedComment() {
-      return (
+      const dirtyHTML =
         (this.commentObj?.text && marked.parse(this.commentObj?.text)) ||
-        (this.comment && marked.parse(this.comment))
-      );
+        (this.comment && marked.parse(this.comment));
+      return DOMPurify.sanitize(dirtyHTML);
     },
     commentStyle() {
       return this.commentObj?.commentStyle;

Vulnerability mechanics

Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

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