CVE-2026-41239 — Cross-Site Scripting (XSS)
CVE-2026-41239 — DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Starting in version 1.0.10 and prior to version 3.4.0, `SAFE_FOR_TEMPLATES` strips `{{...}}` expressions from untrusted HTML. This works in string mode but not with `RETURN_DOM` or `RETURN_DOM_FRAGMENT
What This Means For You
- If your environment is affected by CWE-79, CWE-1289, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-41239 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-2026-41239 - DOMPurify XSS via Template Evaluation
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-41239 | vulnerability | CVE-2026-41239 |
| CWE-79 | weakness | CWE-79 |
| CWE-1289 | weakness | CWE-1289 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 23, 2026 at 19:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
Believe this infringes your rights? Submit a takedown request.
Related Posts
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...
Critical XSS in hackage-server via Malicious .cabal Metadata
CVE-2026-40472 — In hackage-server, user-controlled metadata from .cabal files are rendered into HTML href attributes without proper sanitization, enabling stored Cross-Site Scripting (XSS) attacks.
Critical CSRF Flaw in hackage-server Poses Supply Chain Risk
CVE-2026-40471 — hackage-server lacked Cross-Site Request Forgery (CSRF) protection across its endpoints. Scripts on foreign sites could trigger requests to hackage server, possibly abusing latent...