Read the docs
TI-2026-32236 Aliases CVE-2026-44259

efw4.X: Stored XSS via previewServlet

Priority MEDIUM 54CWE-80Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-80.

Summary

efw4.X is an Enterprise Framework for Web. Prior to 4.08.010, the previewServlet serves files with their detected MIME type based on file extension, without any content sanitization or security headers. Files with .html, .htm, or .svg extensions are served as text/html or image/svg+xml respectively, causing any embedded JavaScript to execute in the victim's browser within the application's origin. This vulnerability is fixed in 4.08.010.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00167 5th percentileScored 2026-11-07
Fix Fixed efw4.X (efwGrp): 4.08.010

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
efwGrpefw4.Xbefore 4.08.0104.08.010Patch availableCNA
  • efw4.X VendorefwGrp Affected before 4.08.010 Fixed in 4.08.010 Patch available CNA

Remediation

  • Fix · CNA efw4.X (efwGrp) Fixed in 4.08.010

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44259

References

Other 1

  • TI-2026-32235 efw4.X: Path Traversal via Unchecked dst Parameter leads to Remote Code Execution CVSS 4.0CRITICAL 9.3
  • TI-2026-32234 efw4.X: RCE via zipslip CVSS 4.0CRITICAL 9.3
  • TI-2026-32237 efw4.X: readonly Flag Not Enforced Server-Side CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences