CVE-2026-65841: CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in xdan jodit
Jodit Editor is a WYSIWYG editor with a built-in file browser & image editor. Prior to 4.13.6, Jodit's clean-html denyTags filter does not normalize foreign SVG or MathML script node names, allowing a script element nested directly in SVG or MathML to remain in editor.value and execute when content is loaded. This issue is fixed in version 4.13.6.
AI Analysis
Technical Summary
The vulnerability in Jodit Editor (CVE-2026-65841) arises from the clean-html denyTags filter not properly normalizing script node names within SVG or MathML namespaces. As a result, script elements nested directly inside SVG or MathML content are not removed and remain in the editor's value, enabling execution of potentially malicious scripts when the content is loaded. This is a classic cross-site scripting (XSS) flaw classified under CWE-80. The vulnerability affects all versions prior to 4.13.6, where the issue has been fixed.
Potential Impact
An attacker can inject and execute arbitrary scripts within the context of the affected application by embedding script elements inside SVG or MathML content. This can lead to client-side code execution, potentially compromising user data or session integrity. The CVSS 4.0 base score is 5.3 (medium severity), indicating a moderate risk without requiring privileges or user interaction beyond loading the crafted content.
Mitigation Recommendations
Upgrade Jodit Editor to version 4.13.6 or later, where the vulnerability has been fixed. No other mitigation steps are indicated by the vendor advisory. Patch status is not explicitly stated but the fix is available in 4.13.6.
CVE-2026-65841: CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in xdan jodit
Description
Jodit Editor is a WYSIWYG editor with a built-in file browser & image editor. Prior to 4.13.6, Jodit's clean-html denyTags filter does not normalize foreign SVG or MathML script node names, allowing a script element nested directly in SVG or MathML to remain in editor.value and execute when content is loaded. This issue is fixed in version 4.13.6.
CVSS v4.0
Score 5.3medium
Affected software
xdan
jodit
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Jodit Editor (CVE-2026-65841) arises from the clean-html denyTags filter not properly normalizing script node names within SVG or MathML namespaces. As a result, script elements nested directly inside SVG or MathML content are not removed and remain in the editor's value, enabling execution of potentially malicious scripts when the content is loaded. This is a classic cross-site scripting (XSS) flaw classified under CWE-80. The vulnerability affects all versions prior to 4.13.6, where the issue has been fixed.
Potential Impact
An attacker can inject and execute arbitrary scripts within the context of the affected application by embedding script elements inside SVG or MathML content. This can lead to client-side code execution, potentially compromising user data or session integrity. The CVSS 4.0 base score is 5.3 (medium severity), indicating a moderate risk without requiring privileges or user interaction beyond loading the crafted content.
Mitigation Recommendations
Upgrade Jodit Editor to version 4.13.6 or later, where the vulnerability has been fixed. No other mitigation steps are indicated by the vendor advisory. Patch status is not explicitly stated but the fix is available in 4.13.6.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-22T23:16:47.753Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a6cfc17bf32cb7a343268b6
Added to database: 07/31/2026, 19:48:39 UTC
Last enriched: 07/31/2026, 20:04:07 UTC
Last updated: 09/14/2026, 15:21:01 UTC
Views: 54
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