CVE-2026-41238 — Cross-Site Scripting (XSS)
CVE-2026-41238 — DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Versions 3.0.1 through 3.3.3 are vulnerable to a prototype pollution-based XSS bypass. When an application uses `DOMPurify.sanitize()` with the default configuration (no `CUSTOM_ELEMENT_HANDLING` optio
What This Means For You
- If your environment is affected by CWE-79, CWE-1321, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-41238 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-41238 - DOMPurify Prototype Pollution XSS Bypass Attempt
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-41238 | vulnerability | CVE-2026-41238 |
| CWE-79 | weakness | CWE-79 |
| CWE-1321 | weakness | CWE-1321 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 23, 2026 at 19:16 UTC |
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